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IDEAL MATHS COACHING CENTRE, 192, PWD Road, NAGERCOIL. 9843322969 SCIENCE LESSON 3 HUMAN BODY MARKS:50 CLASS:X 30/12/2018 ART 1
Part A 10x1=10
Choose the correct answer
1. The part of brain which controls emotional reactions in
our body is_____________
a) Cerebellum b) Cerebrum
c) Thalamus d) Hypothalamus
2. Spinal nerves are___________
a) sensory nerves b) motor nerves
c) mixed nerves d) innervating the brain
3. The sensory organs contain____________
a) Unipolar neuron b) Bipolar neuron
c) Multipolar neuron d) Medullated neuron
4. Normal blood glucose level in 1 dl of blood is_____
a) 80-100 mg/dl b) 80-120 mg/dl
c) 80-150 mg/dl d) 70-120 mg/dl
5. In Meiosis-1, the pairing of homologous chromosomes
take place during __________ stage.
a) leptotene b) zygotene c) pachytene d) diplotene
6. Neurotransmitters are released at the synapse by_____
a) Tips of Dendrites b) Synaptic Knobs
c) Organelles of Cyton d) Myelin sheath of Axon
7. The hormone administered by doctors to a pregnant
woman to help in childbirth during the time of natural
delivery is____________
a) Oestrogen b) Progesterone c) Insulin d) Relaxin
8. The important event of meiosis is the crossing over. It occurs
during childbirth during the time of natural delivery
is______________
a) Leptotene b) Pachytene c) Diplotene d) Zygotene
9. Pick out the item which has sequential arrangement.
a) Zygotene Leptotene Pachytene Diplotene
Diakinesis
b) Diakinesis Zygotene Leptotene Pachytene
Diplotene
c) Laptotene Zygotene Pachytene Diplotene
Diakinesis
10. Assertion (A): All spinal nerves are mixed nerves.
Reason (R): Each spinal nerve has a sensory root and a motor
root.
(i) Both ‘A’ and ‘R’ are true and ‘R’ explains ‘A’ (ii) Both ‘A’ and ‘R’ are true but ‘R’ doesn’t explain ‘A’.
(iii) Only ‘A’ is true but ‘R’ is false. (iv) ‘A’ is false but
‘R’ is true.
Part B 10x2=20
Answer the following
1. Name the two systems which help in the control and
co-ordination of metabolic activities. Write any one
difference between them.
2. Name the part of the brain which regulates heart beat
and respiration. Where is it located in the brain?
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IDEAL MATHS COACHING CENTRE, 192, PWD Road, NAGERCOIL. 9843322969 SCIENCE LESSON 3 HUMAN BODY MARKS:50 CLASS:X 30/12/2018 ART 1
3. What are endocrine glands? Name the secretions of
these glands. How do these secretions reach the target
organs?
4. Which hormone(s) is/are called (i) Personality
hormone (ii) fight, flight and fright hormones.
5. In which sub-stages of meiosis-I do the following
events occur?
(i) pairing of homologous chromosomes
(ii) terminalization
(iii) crossing over
(iv) formation of spindle apparatus
6. Which gland is called the ‘dual gland’? Why?
7. What are the functions of cerebrum?
8. Thyroid gland secretes a hormone called thyroxine.
Give any two functions of this hormone.
9. Rahul forgets his answers, lacks intelligence lacks
imagination and reasoning after met an accident. Which area
affected to him?
10. Match the following:
S.No. Glands Location
1. Thyroid gland Abdomen
2. Pituitary gland Thorax
3. Pancreas Head
4. Thymus gland Neck
Part C 4x5=20
Answer the following
1. Describe the structure of a neuron with the help of a neat,
labeled diagram.
2. List out the various parts of the human brain and write a note
on their functions.
3. Name the endocrine glands and their location in the human
body. Describe any two of them in detail.
4. Observe the diagram of the human brain and identify the
areas mentioned:
i) The area responsible for consciousness, intelligence,
memory, imagination and reasoning.
ii) The area responsible for regulation and co-
ordination of group movements of voluntary
muscles.
iii) The area responsible for sleeping and
respiration.
iv) The area responsible for reflexes involved in
the regulation of heart beat, blood vessel
contraction, breathing etc.
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IDEAL MATHS COACHING CENTRE, 192, PWD Road, NAGERCOIL. 9843322969
ART 3 SCIENCE (phy) LESSON 14,15 MARKS:50 CLASS:X 01-01-2019
Choose the correct answer 10x1=10
1. The acceleration in a body is due to-----------
(Balanced force, unbalanced force, Electrostatic force)
2. The physical quantity which is equal to rate of change
of momentum is
(displacement, acceleration, Force, impulse)
3. The momentum of a massive object at rest is ---------
(very large, very small, zero, infinity)
4. The mass of a person is 50kg. The weight of that
person on the surface of the earth will be---
(50N, 490N, 35N, 380N)
5. The freezing of biotechnology products like vaccines
requires------- Freezing system.
(Helium, Nitrogen, Ammonia, Chlorine)
6. Mass of an object is 10kg. What is its weight on the
earth(Where w=mg, g=9.8m/s2)
(49N, 25N, 98N, 100N)
7. Metals frozen to low temperature showed more
resistance to wear. This is known as
(Cryogenic yielding, Cryogenic hardening,
Cryogenic cooling, Cryogenic shaping)
8. The unit of weight is----------- (kg, g, Newton, ms-)
9. Chandrayaan operated for ------------ days in space.
(a)213 (b)321 (c)312 (d)231
10. Assertion(A): Liquefied cryogenic gases are
sprayed on electric cables in big cities.
Reason(R): Liquefied cryogenic gases prevent
wastage of power.
(i) A is incorrect and R is correct (ii) A is correct and R
is incorrect (iii) Both A and R are incorrect (iv)A is
correct and R is supports A
Answer the following: 10x2=20
1. Fill in the blanks:
(a) Force = Mass x Acceleration, then momentum -------
(b) Liquid hydrogen is for rocket, then----------- for
MRI.
2. Correct the mistakes. If any in the following
statements:
(a) One newton is the force that produces an acceleration
of 1ms-2
in an object of 1gram mass.
(b) Action and reaction is always acting on the same body.
3. The important use of cryogenics is cryogenic fuels.
What do you mean by cryogenic fuels.
4. As a matter of convention, an anticlockwise moment is
taken as----------- and a clockwise moment is taken as--
5. When a gun is fired, it exerts forward forces on the
bullet”. Why does the gun recoil backwards?
6. Fill in the blanks:
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IDEAL MATHS COACHING CENTRE, 192, PWD Road, NAGERCOIL. 9843322969
ART 3 SCIENCE (phy) LESSON 14,15 MARKS:50 CLASS:X 01-01-2019
The space station --------- and ---------- have been
monolithic. (Salyut, Mir, ISS, Skylab)
7. To every action there is equal and opposite reaction.
Explain action and reaction with example.
8. Correct the mistakes if any in the following statements.
(a) One newton is the force that produces an acceleration
of 1ms-2
in an object of 1 gram mass.
(b) The physical quantity which is equal to the rate of
change of momentum is impulse.
9. From the following statements write down that which is
not applicable to mass of an object:
a)It is a fundamental quantity. b)It is measured using
physical balance. c)It is measured using spring
balance.
10. The name of some organisations
which are associated with Chandrayan-I mission are
given below. But some of them are not. List out the
wrong ones.
( ISRO, BARC, NASA, ESA,WHO, ONGC)
Answer the following: (ANSWER 5) 5x4=20
1. Draw & Label the following parts in the screw gauge
diagram.
i) Head scale ii) Pitch scale iii) Index line iv) Ratchet v)
milled head.
2. (i) Space stations are used to study the effects of
long-space flight on the human body. Justify.
(ii) F= 𝐺 𝑚1𝑚2𝑑2 is the mathematical form of Newton’s law
of gravitation. Give the statement of Newton’s law of
gravitation.
3. (i) Newton’s first law of motion gives a qualitative
definition of force. Justify.
10m/s 5m/s F1 F2
12m/s 4m/s
(ii) 10 kg 20kg 10 kg 20kg 10kg 20kg
The figure represents two bodies of masses 10kg and
20kg, moving with an initial velocity 10ms-1
and 5ms-1
respectively. They collide with each other. After
collision, they move with velocities 12ms-1
and 4ms-1
respectively. The time of collision is 2s. Now
calculate F1 and F2.
4. What are the uses of cryogenic techniques?
5. Explain Chandrayaan.
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IDEAL MATHS COACHING CENTRE, 192, PWD Road,NAGERCOIL.9843322969
SCIENCE 10. ATOMS AND MOLECULES CLASS:X MARKS: 50 ART 4
Pa
ge1
PART –A ANSWER THE FOLLOWING 10x2=20
1. Analyse the table and fill in the blanks:
Gas Atomic Mass Molecular Mass Atomicity
Ozone 16 48 -
Nitrogen 14 - 2
2. From the given examples. From the pair of isotopes and the pair of isobars. 18Ar40
, 17Cl 35
, 20Ca40
, 17Cl37
3. Analyse the table and fill in the blanks:
Substance Mass No of moles
a) Al 81g -
b) Fe - 0.5
4. Calculate the gram molecular mass of water from the values of gram atomic mass of hydrogen and
oxygen.
5. Calculate the number of water molecules present in one drop of water which weighs 0.18g.
6. Molecular mass of nitrogen is 28. Its atomic mass is 14. Find the atomicity of nitrogen.
7. Identify and correct the mistake in each of the following:
(i) The molar volume of gas at STP is 22.4 cm3.
(ii) 2 x R.M.M. = V.D.
8. Gram molecular mass of oxygen is 32g. Density of oxygen is 1.429g/l. Find the gram molecular
volume of oxygen.
9. ‘Cl’ represents Chlorine atom, ‘Cl2’ represents Chlorine molecule. List out any two differences
between atoms a molecules.
10. Calculate the number of moles in 24.092x1022
molecules of water.
Part- B ANSWER ANY 6 6x5=30
11. State Avogadro’s law. Give its importance.
12. Modern atomic theory takes up the wave concept, principle of uncertainty and other latest
discoveries to give a clear cut picture about an atom. State the findings of modern atomic theory.
13. Find the gram molecular mass of the following from the data given:
(i)H2O (ii) CO2 (iii) NaOH (d) SO2 (v) H2SO4
14. How will you establish the relation between vapour density and molecular mass of a gas by
applying Avogadro’s law?
15. Calculate the number of moles in:
(i) 12.046 x 1023
atoms of Copper (ii) 27.95g of Iron (iii)1.51 x 1023
molecules of CO2
16. Nitro glycerine is used as an explosive. The equation for the explosive reaction is
4C3H5(NO3)3(l) →12CO2(g) + 10H2O (g) + 6N2 (g) + O2(g)
(Atomic mass of C =12, H=1,N=14, O=16)
(i) How many moles does the equation show for
(a) Nitroglycerine (b) gas molecules produced?
(ii) How many moles of gas molecules are obtained from 1 mole of Nitroglycerine?
(iii) What is the mass of 1 mole of nitroglycerine?
17. Find how many moles of atoms are there in:
(i)2g of Nitrogen (ii) 23g of sodium (iii)40g of Calcium (iv)1.4g of Lithium(v)32g of S.
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IDEAL MATHS COACHING CENTRE, 192, PWD Road,NAGERCOIL.9843322969
SCIENCE 10. ATOMS AND MOLECULES CLASS:X MARKS: 50 ART 4
Pa
ge2
PART –A ANSWER THE FOLLOWING 10x2=20
1. Analyse the table and fill in the blanks:
Gas Atomic Mass Molecular Mass Atomicity
Ozone 16 48 -
Nitrogen 14 - 2
2.From the given examples. From the pair of isotopes and the pair of isobars. 18Ar40
, 17Cl 35
, 20Ca40
, 17Cl37
3. Analyse the table and fill in the blanks:
Substance Mass No of moles
a) Al 81g -
b) Fe - 0.5
4. Calculate the gram molecular mass of water from the values of gram atomic mass of
hydrogen and oxygen.
5. Calculate the number of water molecules present in one drop of water which weighs 0.18g.
6. Molecular mass of nitrogen is 28. Its atomic mass is 14. Find the atomicity of nitrogen.
7. Identify and correct the mistake in each of the following:
(iii) The molar volume of gas at STP is 22.4 cm3.
(iv) 2 x R.M.M. = V.D.
8. Gram molecular mass of oxygen is 32g. Density of oxygen is 1.429g/l. Find the gram molecular
volume of oxygen.
9. ‘Cl’ represents Chlorine atom, ‘Cl2’ represents Chlorine molecule. List out any two differences
between atoms a molecules.
10. Calculate the number of moles in 24.092x1022
molecules of water.
Part- B ANSWER ANY 6 6x5=30
11. State Avogadro’s law. Give its importance.
12. Modern atomic theory takes up the wave concept, principle of uncertainty and other latest
discoveries to give a clear cut picture about an atom. State the findings of modern atomic theory.
13. Find the gram molecular mass of the following from the data given:
(i)H2O (ii) CO2 (iii) NaOH (d) SO2 (v) H2SO4
14. How will you establish the relation between vapour density and molecular mass of a gas by
applying Avogadro’s law?
15. Calculate the number of moles in:
(ii) 12.046 x 1023
atoms of Copper (ii) 27.95g of Iron (iii)1.51 x 1023
molecules of CO2
16. Nitro glycerine is used as an explosive. The equation for the explosive reaction is
4C3H5(NO3)3(l) →12CO2(g) + 10H2O (g) + 6N2 (g) + O2(g)
(Atomic mass of C =12, H=1,N=14, O=16)
(iv) How many moles does the equation show for
(b) Nitroglycerine (b) gas molecules produced?
(v) How many moles of gas molecules are obtained from 1 mole of Nitroglycerine?
(vi) What is the mass of 1 mole of nitroglycerine?
17. Find how many moles of atoms are there in:
(i)2g of Nitrogen (ii) 23g of sodium (iii)40g of Calcium (iv)1.4g of Lithium(v)32g of S.
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IDEAL MATHS COACHING CENTRE, 192, PWD Road, NAGERCOIL. 9843322969 SCIENCE LESSON 9. SOLUTION MARKS:50 CLASS:X ART:5
E.MUTHUSAMY MSc.(Che), MSc.(Psy), MEd., MPhil., MA(Eng)., MA(Soc).,MA(P.admin).,BLISc.,DMLT, PGDCA
Whatsapp: 9940847892. ACTC TUITION CENTRE, PWD ROAD, NAGERCOIL. Email:[email protected]
PART A Choose the correct answer 15x1=15
1. Solution that contains water as the solvent is called aqueous solution. If carbon disulphide
is a solvent in a solvent in a given solution, then the solution is called…….. (aqueous solution, non-aqueous solution)
2. If two liquids are mutually soluble, they are called--------- liquids.(miscible, immiscible)
3. When sunlight passes through window of the classroom its path is visible. This is due to
………. Of light. (Reflection, scattering) 4. The particles various forms are visible only under an ultra-microscope. A solution
containing such particles is called-------- (true solution, colloidal solution)
5. The number of compounds in a binary solution are is---- (one/two)
6. The mixture of gases use by deep sea divers is (Helium-oxygen, Oxygen-Nitrogen,
Helium-Neon, Neon-oxygen)
7. Soil cannot store more nitrogen than it can hold. Hence earth soil is referred to be in a
state of ------------ (saturation, unsaturation)
8. In an endothermic process, solubility increases with -----temperature. (increases,
decreases)
9. Aquatic species are more comfortable in cold water because------------
(i) As the temperature decreases, the solubility of dissolved oxygen increases.
(ii) As the temperature increases, the solubility of dissolved oxygen increases.
(iii) As the temperature increases, the solubility of dissolved oxygen decreases.
10. When sunlight passes through the window of your house, the dust particles scatter the
light making the path of the light visible. This phenomenon is called as
(Brownian motion, Tyndall effect, Raman Effect, Uniform motion)
11. ----------- is opaque in nature. (Water, True solution, Colloids, Suspension)
12. The size of particles in true solution is---------
(10Ǻ to 1000Ǻ , 1Ǻ to 10Ǻ , more than 1000Ǻ , Less than 1000Ǻ ) 13. The solubility of Sodium Nitrate in water is-------(92g, 184g, 95g, 36g)
14. Which of the following is a true solution-----------------
(Milk, Salt in carbon di sulphide, Blood, Sugar solution)
15. The size of particles in SUSPENSION is---------
(10Ǻ to 1000Ǻ , 1Ǻ to 10Ǻ , more than 2000Ǻ , Less than 2000Ǻ ) Part B Answer the following 10x2=20
16. Distinguish between the saturated and unsaturated solutions using the data give below at
a temperature of 25ᵒC.
17. You have prepared a saturated solution of sugar. Is it possible to dissolve some more grams
of sugar to this solution? Justify your stand.
18. Find the concentration of solution in terms of weight percent if 20gms of common salt is
dissolved in 50gm of water:
19. Valli took some common salt, naphthalene balls, camphor, baking soda and washing
soda. She attempted to dissolve these substances either in water or in acetone. Complete the
table with the expected results.
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IDEAL MATHS COACHING CENTRE, 192, PWD Road, NAGERCOIL. 9843322969 SCIENCE LESSON 9. SOLUTION MARKS:50 CLASS:X ART:5
E.MUTHUSAMY MSc.(Che), MSc.(Psy), MEd., MPhil., MA(Eng)., MA(Soc).,MA(P.admin).,BLISc.,DMLT, PGDCA
Whatsapp: 9940847892. ACTC TUITION CENTRE, PWD ROAD, NAGERCOIL. Email:[email protected]
20. (i) Which gas is dissolved in soft drinks?
(ii) What will you do increase the solubility of this gas?
21. Give the dispersed phase and the dispersion medium in each of the following
a. Cheese b. soda water c. smoke
22. 20g of common salt is dissolved in 60g of water. Find the concentration of the solution
in terms of weight percentage?
23. Take 10g of common salt and dissolve it in 40g of the water. Find the concentration of
solution in terms of weight percent.
24. Common salt dissolves in water easily. Give reason.
25. 2g Potassium sulphate was dissolved In 12.5ml water. On cooling the first crystals
appeared at 60ᵒC. what is the solubility of Potassium sulphate in water at 60ᵒC.
26. Complete the following
Solute Solvent Example
Solid Alloys
Solid Liquid
Solid Gas
Liquid Solid
27. Match the following
Solute- solvent Examples
Solid -solid - Milk
Liquid -liquid - Helium-Oxygen
Gas -gas - Sugar solutions
Solid -liquid - Alloys
28. Solubility of KNO3 increases with increase in temperature but the solubility of CaO
decreases with increase in temperature. Give reasons.
29. When the sunlight passes through the window of the class room, the path of the light is
visible. What is this effect called? Give reasons.
30. Define Solubility.
Part C Answer the following 3x5=15
31. Differentiate true solution and colloidal solution and suspension
32. Beaker A has sugar mixed with water and beaker B has starch dissolved in water:
(i) Which solution will scatter light?
(ii) In which beaker does the Brownian movement take place?
(iii) Name the type of solution that beaker A and beaker B contain.
(iv) Which of the two solutions is homogeneous?
(v) Identify the beaker that has particles of size 10Ǻ to 2000Ǻ
33. Name the type of solution formed in the following cases:
(i) 20g of NaCl in 100g of Water (ii) 36g of NaCl in 100g of water
(iii) 45g of NaCl in 100g of water at 80ᵒC.
(iv) Sulphur dissolved in CS2. (v) Nitrogen is soil.
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IDEAL MATHS COACHING CENTRE, 192, PWD Road, NAGERCOIL. 9843322969
06/01/19 SCIENCE(PHY,CHE) LESSON 9,10,11,14,15 MARKS:75 CLASS:X ART: 6 (MODEL-1)
E.MUTHUSAMY MSc.(Che), MSc.(Psy), MEd., MPhil., MA(Eng)., MA(Soc).,MA(P.admin).,BLISc.,DMLT, PGDCA
Whatsapp: 9940847892. ACTC TUITION CENTRE, PWD ROAD, NAGERCOIL. Email:[email protected]
Choose the correct answer 15x1=15
1. If two liquids are mutually soluble, they are called-----
---- liquids. (miscible, immiscible)
2. Which of the following is a true solution----------------
(Milk, Salt in carbon di sulphide, Blood, Sugar solution)
3. The size of particles in SUSPENSION is---------
(10Ǻ to 1000Ǻ , 1Ǻ to 10Ǻ , more than 2000Ǻ , Less than 2000Ǻ )
4. Atoms of the same element may not be similar in all
respect. It is called as (a) Isobars (b) Isochore
(c) Isotopes (d) Isotone
5. The molecular formula for sucrose is---------
(a) C12H20O11 (b) C13H20O11 (c) C12H22O11 (d) C12H22O8
6. Atomicity of Sulphur is------(a) 4 (b) 5 (c) 6 (d) 8
7. pH = -log10[H+]. The pH of a solution containing
hydrogen ion concentration of 0.001M solution is ------
(3/11/14)
8. 2KClO3 MnO2 2KCl + 3O2
In this chemical reaction MnO2 acts as
(Reactant, product, Catalyst, Promoter)
9. Metal + Acid Salt + ---------.
(Oxygen, Water, Carbon, Hydrogen)
10. In a Screw Gauge, if the zero of the head scale lies
below the pitch scale axis, the zero error is-------------
(positive, negative, nil)
11. The Screw Gauge is used to measure the diameter of a -
--------(crowbar, thin wire, cricket ball )
12. The acceleration in a body is due to-----------
(Balanced force, unbalanced force, Electrostatic force)
13. The momentum of a massive object at rest is ---------
(very large, very small, zero, infinity)
14. The mass of a person is 50kg. The weight of that person
on the surface of the earth will be---
(50N, 490N, 35N, 380N)
15. The freezing of biotechnology products like vaccines
requires------- Freezing system.
(Helium, Nitrogen, Ammonia, Chlorine)
Answer the following (ANY 20) 20x2=40
16. Find the concentration of solution in terms of weight
percent if 20gms of common salt is dissolved in 50gm of
water.
17. Common salt dissolves in water easily. Give reason.
18. 2g Potassium sulphate was dissolved in 12.5ml water.
On cooling the first crystals appeared at 60ᵒC. what is the
solubility of Potassium sulphate in water at 60ᵒC.
19. Match the following
Solute- solvent Examples
Solid -liquid - Milk
Liquid -liquid - Helium-Oxygen
Gas -gas - Sugar solutions
Solid -solid - Alloys
20. Solubility of KNO3 increases with increase in
temperature but the solubility of CaO decreases with increase
in temperature. Give reasons.
21. Analyse the table and fill in the blanks:
Gas Atomic Mass Molecular
Mass
Atomicity
Ozone 16 48 -
Nitrogen 14 - 2
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IDEAL MATHS COACHING CENTRE, 192, PWD Road, NAGERCOIL. 9843322969
06/01/19 SCIENCE(PHY,CHE) LESSON 9,10,11,14,15 MARKS:75 CLASS:X ART: 6 (MODEL-1)
E.MUTHUSAMY MSc.(Che), MSc.(Psy), MEd., MPhil., MA(Eng)., MA(Soc).,MA(P.admin).,BLISc.,DMLT, PGDCA
Whatsapp: 9940847892. ACTC TUITION CENTRE, PWD ROAD, NAGERCOIL. Email:[email protected]
22. From the given examples. From the pair of isotopes and
the pair of isobars. 18Ar40
, 17Cl 35
, 20Ca40
, 17Cl37
23. Analyse the table and fill in the blanks:
Substance Mass No of moles
a) Al 81g -
b) Fe - 0.5
24. Calculate the gram molecular mass of water from the
values of gram atomic mass of hydrogen and oxygen.
25. What type of chemical reaction takes place when
(i) Limestone is heated? Explain
(ii) A Magnesium ribbon is burnt in air?
26. The hydroxyl ion concentration of a solution is 1x10-8
M.
What is the pH of the solution?
27. Match the following:
Source Acid present
Lemon - Lactic acid
Apple - Tartaric acid
Grapes - Citric acid
Curd - Malic acid
28. Fill in the blanks:
(a) Force = Mass x Acceleration, then momentum ---------
(b) Liquid hydrogen is for rocket, then----------- for MRI.
29. Correct the mistakes. If any in the following statements:
(a) One newton is the force that produces an acceleration of
1ms-2
in an object of 1gram mass.
(b) Action and reaction is always acting on the same body.
30. The important use of cryogenics is cryogenic fuels.
What do you mean by cryogenic fuels.
31. As a matter of convention, an anticlockwise moment is
taken as----------- and a clockwise moment is taken as-
32. State the principle of screw gauge.
33. What is meant by Pitch of the Screw?
34. What is astronomical unit?
35. What is light year.
36. Fill in the blanks:
The special methods adopted to determine very large
distances are---------- and --------
(Laser pulse method, Light year method, Radio echo
method, Astronomical method)
Answer the following (any 4) 4x5=20
37. Differentiate true solution and colloidal solution and
suspension.
38. How will you establish the relation between vapour
density and molecular mass of a gas by applying
Avogadro’s law?
39. Draw & Label the following parts in the screw gauge
diagram. i) Head scale ii) Pitch scale iii) Index line iv)
Ratchet v) milled head.
40. (i) Space stations are used to study the effects of long-
space flight on the human body. Justify.
(ii) F= 𝐺 𝑚1𝑚2𝑑2 is the mathematical form of Newton’s
law of gravitation. Give the statement of Newton’s law of
gravitation.
(i) 41. Explain classification of an acid.
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http://www.trbtnpsc.com/2013/09/10th-study-materials.html
IDEAL MATHS COACHING CENTRE, 192, PWD Road, NAGERCOIL. 9843322969
SCIENCE LESSON 1. HEREDITY AND EVOLUTION MARKS:50 CLASS:X ART:7
E.MUTHUSAMY MSc.(Che), MSc.(Psy), MEd., MPhil., MA(Eng)., MA(Soc).,MA(P.admin).,BLISc.,DMLT, PGDCA
Whatsapp: 9940847892. ACTC TUITION CENTRE, PWD ROAD, NAGERCOIL. Email:[email protected]
1. Mendel observed 7 pairs of contrasting characters in Pisum Sativum. Which one of the
following is not a part of that?
(i)Tall and dwarf (ii) Yellow and green seed colour
(iii)Terminal and axial flower (iv) Smooth and rough stem
2. Primitive man evolved in---------------
(i)Africa (ii)America (iii)Australia (iv)India
3. Which of the following is inheritable?
(i)An altered gene in sperm (ii)an altered gene in liver cells
(iii)an altered gene in skin cells (iv) an altered gene in udder cells.
4. The theory of Natural selection was proposed by---------
(i)Charles Darwin (ii) Hugo de Vries (iii)Gregor Johann Mendel (iv)Jean Baptise Lamarck
5. Somatic gene therapy causes-----
(i)Changes in sperm (ii)Changes in progeny (iii)changes in body cell (iv)changes in ovum
6. In a pea plant, the yellow colour of the seed dominates over the green colour. The genetic make
up of the green colour of the seed can be shown as---------------
(i)GG (ii)Gg (iii)Yy (iv)yy
7. In persons suffering from insulin- dependent diabetes, ------ the cells of pancreas are
degenerated
(i)Alpha (ii)Beta (iii)Gamma (iv)Delta
8. Identical twins are born as a result of fertilization between--------
(i)two eggs and two sperms (ii)two eggs and one sperm
(iii) one egg and one sperm (iv) one egg and two sperms.
9. Identify the incorrect statement about identical twins.
(i) Developed from a single zygote. (ii)Always of the same sex
(iii) Look alike in many aspects (iv) Differ in their blood groups.
10. The correct statement about Neanderthal man is:
(i)the first human like hominid. (ii) started agriculture
(iii)ate meat and walked erectly (iv)buried the dead
11. The inheritance of characteristics through generation is called “heredity”. In Mental’s Pisum
sativum plant, the genetic material present is---------
(i)DNA (ii)RNA (iii)Protein (iv)Cytoplasm
12. ----------- is alternate expression of same gene.
(i)Alleles (ii) Variation (iii) Speciation (iv)Gene, Allelomorph
13. --------worked out the first scientific experimental study on heredity.
(i)Ian Wilmut (ii) Gregor Johann Mendel
(iii)Charles Darwin (iv)lamarck
14. Biotechnologically synthesized vitamin---------- is used, to cure pernicious anaemia.
(i)Vitamin A (ii) Vitamin B (iii)Vitamin B12 (iv) Vitamin C
15. Diabetes is treated by the biotechnologically produced-----
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http://www.trbtnpsc.com/2013/09/10th-study-materials.html
IDEAL MATHS COACHING CENTRE, 192, PWD Road, NAGERCOIL. 9843322969
SCIENCE LESSON 1. HEREDITY AND EVOLUTION MARKS:50 CLASS:X ART:7
E.MUTHUSAMY MSc.(Che), MSc.(Psy), MEd., MPhil., MA(Eng)., MA(Soc).,MA(P.admin).,BLISc.,DMLT, PGDCA
Whatsapp: 9940847892. ACTC TUITION CENTRE, PWD ROAD, NAGERCOIL. Email:[email protected]
(i)Enzyme (ii) Insulin (iii)Vitamin (iv)Vaccine
ANSWER THE FOLLOWING 10x2=20
16. Match the following by identifying the pair: (medicines, fuel, microbes, metabolism, organic
acids) i)vaccine (ii) natural gas (iii)citric acid (iv)monoclonal antibodies (v) vitamins
17. The heritable characters are varying in different species and within the same species. Name the
variation in the following cases. The eye colour among the human beings are varied as blue, black,
brown, green, etc.,
a)This is called as -------- variation b) This is called as -------- variation.
18. Sexually reproducing organisms produce offspring with marked significant and visible
variation. Asexually reproducing offspring show minor variations.
(i) Do you agree with the above statements?
(ii) Among the following organism point out the asexually reproducing organism.
( Cockroach, Euglena, Earthworm and Bird.)
19. Here are certain important hereditary jargons. Fill in the blanks by choosing a suitable one from the
list given. (allele, Variation, speciation, gene)
(i) -------are the factors which form the physical basis of inheritance.
(ii) -------- is the alternate forms of the same gene.
20. Sequentially arrange the different species of man from primitive to modern man. (Neanderthal man,
Homohabilis, Homoerectus, Homosapiens)
21. Who proposed the theory of Natural selection? Mention the two principles of this theory.
22. What are monoclonal antibodies? Mention its use.
23. Consider the following statements:
(a) Somatic variation pertains to body cells and it is inherited.
(b) The genotype of a character is influenced by factors called chromosomes.
Do you agree with the above statements? If not, give correct statements.
24. Do you agree with the following statement? If not, give correct statements:
(a) Primitive man evolved in Australia (b)Between 7500 – 1000 years the modern Homosapiens
arose.
25. Mention the dominant and recessive traits observed by Mendel in the garden pea plant with respect
to the seed and flower.
Answer any three following 3x5=15
26. Human evolution has a record of changes for the past 15 million years.
(i) Name the different species of mankind in chronological order from primitive to modern man.
(ii) When were the primitive cavers developed.
(iii) Narrate the life led by early man like hominids.
27. Describe in brief Mendel’s monohybrid cross.
28. (a) What is Genetic engineering? (b)What are the uses of Genetic engineering?
29. Explain cloning in detail.
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http://www.trbtnpsc.com/2013/09/10th-study-materials.html
IDEAL MATHS COACHING CENTRE, 192, PWD Road, NAGERCOIL. 9843322969
SCIENCE LESSON 4 REPRODUCTION IN PLANTS MARKS:50 CLASS:X ART:8
E.MUTHUSAMY MSc.(Che), MSc.(Psy), MEd., MPhil., MA(Eng)., MA(Soc).,MA(P.admin).,BLISc.,DMLT, PGDCA
Whatsapp: 9940847892. ACTC TUITION CENTRE, PWD ROAD, NAGERCOIL. Email:[email protected]
Choose the correct answer 20x1=20
1. The method of reproduction in unicellular
organisms like amoeba and bacteria in which they
split into two equal halves and produce new ones
is called__________
a) fragmentation b) binary fission
c) budding d) spore formation
2. In sexual reproduction of following plants,
the first event involved in this is______
a) fertilization b) germination
c) regeneration d) pollination
3. The fertilized ovary is a fruit. The fruit that
develops from a single flower with multi
carpellary, apocarpous superior ovary is_______
a) Aggregate fruit b) Composite fruit
c) Simple fruit d) Multiple fruit
4. If a water soaked seed is pressed, a small
drop of water comes out through the_________
a) stomata b) lenticels c) micropyle d) radicle
5. The mango fruits is called a stone fruit
because it has________
a) skinny epicarp b) stony mesocarp
c) fleshy endocarp d) hard endocarp
6. Consider the following statement
regarding the dispersal of fruits and seeds by
wind and select the correct answer.
a) Fruits and seeds are dispersed with a sudden
jerk by an explosive mechanism.
b) The fruits of tridax carry a persistent calyx
modified into pappus.
c) The fruits of xanthium have sharp pointed stiff
hooks. d) The mesocarp of coconut is fibrous.
7. The product of triple fusion which acts as
nutritive tissue for the development of an embryo
is __________
a) zygote b) placenta
c) scutellum d) endosperm
8. The disadvantage of self-pollination is __
a) There is no wastage to pollen grains
b) The seeds are less in number
c) Self-pollination is sure in bisexual flowers
d) Flowers need not depend on agents of
pollination.
9. The flower is important to a plant because
it helps in ______________
a) attracting b) production of nectar
c) pollination d) sexual reproduction
10. The essential organs of the flower are
______________
a) Calyx Corolla b) Androecium and
Gynoecium c) Calyx and Androecium
d) Corolla and Gynoecium
11. Cross pollination is important for
producing___________
a) new varieties of plants b) plants with better
growth c) disease resistant plants d) all of above
12. Anemophily occurs in ____________
a) Vallisneria b) Grass c) Coconut d)
Datura
13. Which of the following structure /
arrangement favour entamophily ?
a) Pollen grains with wings and feathery stigma
b) Colourful petals and nectar secretion
c) A bunch of flowers with less pollen
d) Pollen grains with mucous covering.
14. Post-fertilization, the ovule changes into a
/ an ______ a) seed b) fruit c) endosperm
d) pericarp
15. Which of the following is correctly
matched ?
a) False fruit – mango b) Multiople fruit –
apple c) Aggregate fruit – polyalthia d)
Caryopsis - banana
16. Identify the mismatched pair.
a) Legume – Dry dehiscent fruit
b) Cypsela – Dry indehiscent fruit
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http://www.trbtnpsc.com/2013/09/10th-study-materials.html
IDEAL MATHS COACHING CENTRE, 192, PWD Road, NAGERCOIL. 9843322969
SCIENCE LESSON 4 REPRODUCTION IN PLANTS MARKS:50 CLASS:X ART:8
E.MUTHUSAMY MSc.(Che), MSc.(Psy), MEd., MPhil., MA(Eng)., MA(Soc).,MA(P.admin).,BLISc.,DMLT, PGDCA
Whatsapp: 9940847892. ACTC TUITION CENTRE, PWD ROAD, NAGERCOIL. Email:[email protected]
c) Pome – Fleshy fruit d) Regma – Resembles
legume
17. A seed dispersed by wind is called ____
a) Autochory b) Anemochoryc) Hydrochoryd)
Zoochory
18. These are all schizocarpic fruit
a) Legume, Follicle, Capsule
b)Berry, Hesperidium, Pome
19. The integuments of the Ovule develop into
a) Ovary b) Seed Coat c) Egg
d) Seed
20. Which is the female reproductive part of a
flower ?
a) Calyx b) Corolla c) Androecium,
d) Gynoecium
Answer the following 10x2=20
1. Write any two differences between asexual
and sexual modes of reproduction.
2. Arrange the following events of sexual
reproduction in plants in the correct sequential
order: Seed formation, pollination, dispersal of
seeds, fertilization.
3. Define fertilization.
4. The methods of reproduction and
organisms are given below. Match the type of
reproduction with the suitable organism.
Fission Spirogyra Yeast
Budding Protozoans Flatworms
Fragmentation Bryophyllum Acteria.
5. Match the following with respect to
dispersal of fruits/seeds:
(a) Autochory (I) Lotus
(b) Anemochory (II) Xanthiun
(c) Hydrochory (III) Tridax
(d) Zoochory (IV) Balsam
6. Use words from the given list to complete
the following paragraph. (The words may be used
once / more than once / not at all). (seed, fruit,
pollination, dispersal, germination, fertilization,
flower, reproduction)
Ramu went to the field along with his father. He
sowed mustard seeds in the soil. After a few days
he observed the process of _________. The seeds
grew into plans and produced ____________. On
maturity, these flowers produced pollen grains
that were transferred to the stigma by
__________. The male gametes fused with
female during the process of___________.
7. Coconut seeds are dispersed by
Hydrochory (dispersal by water). Mention the
part of the fruit whose modification help in this
mechanism.
8. Draw the given diagram of paddy seed and
label any two parts:
9. (a) Identify Fig. A and B
(b) Which part of A is modified into B.
10. (i) Composite fruits are formed by all the
flowers of______
(ii) ________ fruit is developed form a single
flower with a multicarpellary apocarpous superior
overy.
Answer the following (detail) 2x5=10
11. What is self-pollination? Mention
its merits and demerits.
12. Describe the structure of dicot seed
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IDEAL MATHS COACHING CENTRE, 192, PWD Road, NAGERCOIL. 9843322969 SCIENCE LESSON 2 IMMUNE SYSTEM MARKS:50 CLASS:X ART:9
Answer the following 20x2=40
1. Marasmus and Kwashiorkar are both protein deficiency
defects. Marasmus us differs from Kwashiorkar in
enlarged belly and swelling in the face . Are these
sympotoms for the above Disease correct? If not,
correct it.
2. A list of disorders are given below. Pick out the odd
one out and give reasons.(Thalassemia, haemophilia
,albinism, sickle cell anaemia)
3. Difference between the diseases-night blindness and
colour blindness
4. Name the vector host of the malarial parasites. Metion
the species of malarial parasite which causes malignant
and fatal malaria.
5. Name the tests done for the diagnosis and
confirmation of AIDS.
6. What is triple antigen? Name the three diseases which
can be prevented by using it?
7. Mention the type of immunity acquired by a baby
through breastfeeding?
8. Match the following :
List I List II
A. Amoebiasis I. Chills and high fever recurring for 3or4 days
B. Tuberculosis II. Patches on skin and nails with itching
sensation
C. Ringworm III. Abdominal pain with blood and mucus in
stools
D. Malaria Persistent cough and loss of body weight
9. List out diseases based on their mode of transmission
(water borne,air borne,sexual contact) (i) cholera (ii)
typhoid (iii) tuberculosis (iv) leprosy (v)syphilis
(vi)gonorrhea (vii) pneumonia (viii)common cold
(ix)amoebic dysentery (x)AIDS
10. Name the causative organism responsible for ring worm I
humans? Mention the symptom of the infection.
11. Pick out the odd ones:
(i) AIDS : Retro virus ,lymphocytes, BCG,ELISA
(ii) Bacterial disease :Rabies ,cholera ,common cold ,
influenza,
(iii) DPT vaccine: Diptheria ,tuberculosis, Perutusis
Tetanus
(iv) Infective stage of plasmodium in human : Sporozites ,
Merozites , trophozoites, gametocytes
12. In the manufacturing of anti –venom injection against
snake bite, antibodies produced in the horse are being
used. Mention the types of immunity involved.
13. Say wheather each of the following diseases is a
metabolic disorder, a genetic disorder or a nutritional
deficiency disease. (i)thalassemia (ii) beri beri (iii)
diabetes mellitus (iv) bubble boy syndrome (v)scurvy
(vi)marasmus
14. Find the correct statement (True or False):
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IDEAL MATHS COACHING CENTRE, 192, PWD Road, NAGERCOIL. 9843322969 SCIENCE LESSON 2 IMMUNE SYSTEM MARKS:50 CLASS:X ART:9
(i) Tuberculosis is caused by Mycobacterium tuberculosis
bacteria
(ii) Typhoid is caused by Trichophyton fungi
15. Name two diseases that are transmitted by houseflies.
Mention their causative pathogens.
16. You suspect that your friend is suffering from common
cold. What are the questions you will ask your friend to
confirm the disease.
17. Match the vitamin with its deficiency disease:
Vitamins Deficiency diseases
(a) Vitamins A Rickets
(b) Vitamin B5 Nyctalopia
(c) Vitamin D Haemorrhage
(d) Vitamin K Pellagra
18. Correct the following sentence if it has any mistake.
Fungi are green saprophytic or parasitic plants living on
live and decaying organic matter or living or ganisms.
19. Match the disease and causative agents.
1. Influenza – Human rhino virus
2. Common cold – H1N1 virus
3. Tuber culosis – Microporum
4. Ring worm - Mycobacterium
20. You suspect that your friend is suffering from Amoebic
dysentry . What are the questions you will ask your
friend to confirm the disease.
CHOOSE THE BEST ANSWER 10x1=10
21. ---------------- is a bacterial disease.
(i)Meningitis (ii) Rabies (iii) Tetanus (iv)small pox
22. One of the following is transmitted through air. Find it
out. (i)Tuberculosis (ii)Menigitis
(iii) Typhoid (iv) Cholera
23. The most serious form of malaria is caused by Plasmodium
(i)Ovale (ii) malariae (iii) falciparum (iv) Vivax
24. An example of protozoan infecting our intestine is------
(i) Plasmodium vivax (ii)entamoeba histolytica
trypanosoma gambiense taeia solium
25. One of the means of indirect transmission of a disease is--
(i) Sneezing (ii) coughing (iii) through placenta
(iv)using utensils of patients
26. The first vaccine injected into a just born baby is-------------
(i)Oral polio (ii)DPT (iii)DPTand Oral polio (iv)BCG
27. A child eats food rich in carbohydrates and avoids protein
in its diet. Which type of nutritional deficiency will affect
that child?
(i) Kwashiorkar (ii)Nyctalopia (iii)Diabetas
(iv)Down syndrome
28. Pick out a non-antigen. Entry of--------------
(i)Germ (ii)Toxins of germs (iii)New forms of protein
(iv)Mother’s Milk
29. The viral disease is-----------------
(i)Rabies (ii)Cholera (iii)Malaria (iv)Typhoid
30. Pick out the protein deficiency disease
(i)Typoid (ii)Malaria (iii)Marasmus (iv)AIDS
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IDEAL MATHS COACHING CENTRE, 192, PWD Road, NAGERCOIL. 9843322969
SCIENCE LESSON 1,2,3,4 MARKS:75 CLASS:X ART: 10
E.MUTHUSAMY MSc.(Che), MSc.(Psy), MEd., MPhil., MA(Eng)., MA(Soc).,MA(P.admin).,BLISc.,DMLT, PGDCA
Whatsapp: 9940847892. ACTC TUITION CENTRE, PWD ROAD, NAGERCOIL. Email:[email protected]
Choose the correct answer 15x1=15
1. Primitive man evolved in---------------
(i)Africa(ii)America(iii)Australia (iv)India
2. The inheritance of characteristics
through generation is called “heredity”. In
Mental’s Pisum sativum plant, the genetic
material present is--------- (i)DNA (ii)RNA
(iii)Protein iv)Cytoplasm
3. ----------- is alternate expression of
same gene. (i)Alleles (ii) Variation
(iii) Speciation (iv)Gene, Allelomorph
4. --------worked out the first scientific
experimental study on heredity.
(i)Ian Wilmut (ii) Gregor Johann Mendel
(iii)Charles Darwin (iv)lamarck
5. One of the means of indirect transmission
of a disease is-------------
(i) Sneezing (ii) coughing (iii) through
placenta (iv)using utensils of patients
6. The first vaccine injected into a just born
baby is--------(i)Oral polio (ii)DPT
(iii)DPTand Oral polio (iv)BCG
7. A child eats food rich in carbohydrates
and avoids protein in its diet. Which type
of nutritional deficiency will affect that
child?
(i) Kwashiorkar (ii)Nyctalopia
(iii)Diabetas (iv)Down syndrome
8. Pick out the protein deficiency disease
(i)Typoid (ii)Malaria
(iii)Marasmus (iv)AIDS
9. Spinal nerves are___________
a) sensory nerves b) motor nerves c) mixed
nerves d) innervating the brain
10. The sensory organs
contain____________a) Unipolar neuron
b) Bipolar neuron c) Multipolar neuron d)
Medullated neuron
11. Normal blood glucose level in 1 dl of
blood is__________
a) 80-100 mg/dl b) 80-120 mg/dl
c) 80-150 mg/dl d) 70-120 mg/dl
12. In Meiosis-1, the pairing of homologous
chromosomes take place during ___ stage. a)
leptotene b) zygotene c) pachytene
d) diplotene
13. In sexual reproduction of following plants,
the first event involved in this is______
a) fertilization b)germination
c) regeneration d) pollination
14. The fertilized ovary is a fruit. The fruit
that develops from a single flower with multi
carpellary, apocarpous superior ovary is_ a)
Aggregate fruit b) Composite fruit
c) Simple fruit d) Multiple fruit
15. If a water soaked seed is pressed, a
small drop of water comes out through the___
a) stomata b) lenticels
c) micropyle d) radicle
ANSWER THE FOLLOWING 20x2=20
16. Match the following by identifying the
pair: (medicines, fuel, microbes, metabolism,
organic acids) i)vaccine (ii) natural
gas (iii)citric acid (iv)monoclonal antibodies
(v) vitamins
17. Sexually reproducing organisms produce
offspring with marked significant and
visible variation. Asexually reproducing
offspring show minor variations.
(i) Do you agree with the above
statements?
(ii) Among the following organism point
out the asexually reproducing organism.
( Cockroach, Euglena, Earthworm and Bird.)
18. Sequentially arrange the different species of
man from primitive to modern man.
(Neanderthal man, Homohabilis,
Homoerectus, Homosapiens)
19. Who proposed the theory of Natural
selection? Mention the two principles of this
theory.
20. What are monoclonal antibodies? Mention
its use.
21. Name the tests done for the diagnosis and
confirmation of AIDS.
22. What is triple antigen? Name the three
diseases which can be prevented by using
it?
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http://www.trbtnpsc.com/2013/09/10th-study-materials.html
IDEAL MATHS COACHING CENTRE, 192, PWD Road, NAGERCOIL. 9843322969
SCIENCE LESSON 1,2,3,4 MARKS:75 CLASS:X ART: 10
E.MUTHUSAMY MSc.(Che), MSc.(Psy), MEd., MPhil., MA(Eng)., MA(Soc).,MA(P.admin).,BLISc.,DMLT, PGDCA
Whatsapp: 9940847892. ACTC TUITION CENTRE, PWD ROAD, NAGERCOIL. Email:[email protected]
23. Mention the type of immunity acquired by
a baby through breastfeeding?
24. Match the following :
List I List II
A.
Amoebiasis
I. Chills and high fever
recurring for 3or4 days
B.
Tuberculosis
II. Patches on skin and
nails with itching sensation
C.
Ringworm
III. Abdominal pain with
blood and mucus in stools
D. Malaria Persistent cough and loss
of body weight
25. Match the vitamin with its deficiency
disease:
Vitamins Deficiency diseases
(a) Vitamins A Rickets
(b) Vitamin B5 Nyctalopia
(c) Vitamin D Haemorrhage
(d) Vitamin K Pellagra
26. In which sub-stages of meiosis-I do the
following events occur?
(i) pairing of homologous chromosomes
(ii) terminalization
(iii) crossing over
(iv) formation of spindle apparatus
27. Which gland is called the ‘dual gland’?
Why?
28. What are the functions of cerebrum?
29. Thyroid gland secretes a hormone called
thyroxine. Give any two functions of this
hormone.
30. Rahul forgets his answers, lacks
intelligence lacks imagination and
reasoning after met an accident. Which
area affected to him?
31. Match the following:
S.No. Glands Location
1. Thyroid gland Abdomen
2. Pituitary gland Thorax
3. Pancreas Head
4. Thymus gland Neck 32. Write any two differences between asexual
and sexual modes of reproduction.
33. Arrange the following events of sexual
reproduction in plants in the correct sequential
order: Seed formation, pollination, dispersal of
seeds, fertilization.
34. Define fertilization.
35. The methods of reproduction and
organisms are given below. Match the type of
reproduction with the suitable organism.
Fission Spirogyra Yeast
Budding Protozoans Flatworms
Fragmentation Bryophyllum Acteria.
Answer any four following 4x5=20 36. Human evolution has a record of changes
for the past 15 million years.
(i) Name the different species of mankind in
chronological order from primitive to modern
man.
(ii) When were the primitive cavers
developed.
(iii) Narrate the life led by early man like
hominids.
37. (a) What is Genetic engineering? (b)What
are the uses of Genetic engineering?
38. Describe the structure of a neuron with the
help of a neat, labeled diagram.
39. List out the various parts of the human
brain and write a note on their functions.
40. What is self-pollination? Mention its
merits and demerits.
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IDEAL MATHS COACHING CENTRE, 192, PWD Road, NAGERCOIL. 9843322969
SCIENCE (phy) LESSON 16 ELECTRICITY AND ENERGY MARKS:50 CLASS:X ART 11
Choose the correct answer 10x1=10
1. The potential difference required to pass a current 0.2 A
in a wire of resistance 20 ohm is _________.
(i) 100 V (ii) 4 V(iii) 0.01 V (iv) 40 V
2. Two electric bulbs have resistances in the ratio 1 : 2. If
they are joined in series, the energy consumed in these are in
the ratio __
(i) 1 : 2 (ii) 2 : 1 (iii) 4 : 1(iv) 1 : 1
3. Kilowatt-hour is the unit of ________ .
(i) potential difference (ii) electric power
(iii) electric energy (iv) Charge
4. ________ surface absorbs more heat than any other
surface under identical conditions.
(i) White (ii) Rough (iii) Black (iv) Yellow
5. The atomic number of natural radioactive element is ___
(i) greater than 82 (ii) less than 82
(iii) not defined (iv) atleast 92
6. The unit of electric current is …………….. (Ampere, Volt, Watt, Kilo-watt)
7. The energy produce3d when 1 kg of a substance is fully
converted into energy is…………
(9 x 1016
J, 9 x 108 J,18 x 10
8 J,18 x 10
16 J)
8. 1 kwh is equal to
(3.6 x 10-6
J, 3.6 x 106, 6.3 x 10
-6 J, 6.3 x 10
6 J)
9. Einstein’s mass energy relation is
( ,c
ME
2 E=mc
2, E = h, E = ½ mc
2)
10. Fuse wire is made up of an alloy of
(Lead and tin, lead and copper, tin and iron,
zinc and copper)
Answer the following 15x2=30
11. In the list of sources of energy given below, find out the
odd one. (wind energy, solar energy, hydro electric power)
12. Correct the mistakes, if any in the following statements:
(i) A good source of energy would by one which would do a
small amount of work per unit volume of mass.
(ii) Any source of energy we use to do work is consumed and
can be used again.
13. Fuse wire is made up of an alloy of ……..which has high resistance and ………
14. Complete the table choosing the right terms given in
brackets (zinc, copper, carbon, lead, di oxide, aluminium)
+ ve
electrode
Lead acid
accumulator
____________
- ve electrode Lechlanche cell ____________
15. How many electrons flow through an electric bulb every
second, if the current that passes through the bulb is 1.6 A.
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IDEAL MATHS COACHING CENTRE, 192, PWD Road, NAGERCOIL. 9843322969
SCIENCE (phy) LESSON 16 ELECTRICITY AND ENERGY MARKS:50 CLASS:X ART 11
16. Match the following
Components Symbols
(a) Switch (closed)
(b) Battery
(c) Electric bulb
(d) Resistance
17. Draw Leclanche cell diagram.
18. Match the following:
S.No Scientist Invention
(i) Michael Faraday First battery
(ii) George Simon
Ohm
Radioactivity
(iii) Volta Dynamo
(iv) Henry Becquerel Ohm’s law
19. -rays are harmful radiations emitted by natural
radioactive substances.
(a) Which are other radiations emitted from such
substances?
(b) What is the unit of nuclear radiation?
20. Good source of energy should posses some special
characteristics. List them.
21. Match the column A with Column B
A B
1. Current - Volt
2. Electric Potential - Ohm
3. Resistance - Watt
4. Electric power - Ampere
22. Match the column A with Column B
A B
Energy Sources Examples
Fossil fuel Cow dung
Hydro electric power Heat
Bio Mass Coal
Thermal electric
power Water
23. Fill in the blanks
92U235
+0n1
+ 36Kr92
+ + 200 Mev
24. Fill in the blanks:
(i) Potential difference: voltmeter; then current ______.
(ii) Hydro power plant: Conventional source of energy; then
solar energy: __________.
25. Draw voltaic cell.
Answer the following in detail. 2x5=10
26. What is bio-mass? What can be done to obtain bio-
energy using bio-mass?
27. I) state joules law ii) state ohms law iii) define electric
power.
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IDEAL MATHS COACHING CENTRE, NAGERCOIL
BIOLOGY ONE WORD ART 12 16/1/2019
1. Mendel observed 7 pairs of contrasting characters in Pisum
Sativum. Which one of the following is not a part of that? (i)Tall and
dwarf (ii) Yellow and green seed colour
(iii)Terminal and axial flower (iv) Smooth and rough stem
2. Primitive man evolved in---------------
(i)Africa (ii)America (iii)Australia (iv)India
3. Which of the following is inheritable?
(i)An altered gene in sperm (ii)an altered gene in liver cells (iii)an
altered gene in skin cells (iv) an altered gene in udder cells.
4. The theory of Natural selection was proposed by---------
(i)Charles Darwin (ii) Hugo de Vries (iii)Gregor Johann Mendel
(iv)Jean Baptise Lamarck
5. Somatic gene therapy causes-----
(i)Changes in sperm (ii)Changes in progeny (iii)changes in body cell
(iv)changes in ovum
6. In a pea plant, the yellow colour of the seed dominates over the
green colour. The genetic make up of the green colour of the seed can be
shown as----------(i)GG (ii)Gg (iii)Yy (iv)yy
7. Some people can roll their tongue and this is a genetically
controlled auto-somel dominant character. (Roller= RR/Rr;: Non-roller
=rr) A child who, can roll the tongue has one brother who is a non-roller
and two sisters who are rollers. If both the parents are rollers, the
genotypes of their parents would be---------
(i)RR x RR (ii)Rr x Rr (iii) RR x rr (iv) rr x rr
8. Hydra, a multi-cellular invertebrate of phylum
cnidaria(coelenterata) can give rise a new offspring by various methods.
Choose the method by which the offspring are produced with significant
variations. (i)Budding (ii) regeneration (iii) Sexual reproduction
(iv) asexual reproduction
9. The following are the events in the formation of the first cloned
animal the sheep Dolly.
a) Removal of haploid nucleus from the ovum.
b) Implantation of ovum with diploid nucleus into the surrogate
mother. C)Collection of udder cell from the sheep.
d) Development of a young clone.
The correct sequential order of these events is------------
(i)abcde (ii)cabed (iii)cadbe (iv)edcba
10. The following are statements about stem cells:
(a) There are unspecialised/undifferentiated cells.
(b) They can be transformed into any type of body cell.
(c) They can multiply rapidly to form a large number of similar types
of cells. D)They cannot transform into cardiac cells or nerve cells.
e)They are obtained from reproductive progeny only.
The correct statements are--------------
(i)a,b,c only (ii)c,d,e only (iii)a,c,e only (iv)b,c,e only
11. In persons suffering from insulin- dependent diabetes, ---- the cells
of pancreas are degenerated
(i)Alpha (ii)Beta (iii)Gamma (iv)Delta
12. Identical twins are born as a result of fertilization between-----
(i)two eggs and two sperms (ii)two eggs and one sperm (iii) one egg and
one sperm (iv) one egg and two sperms.
13. Identify the incorrect statement about identical twins.
(i) Developed from a single zygote. (ii)Always of the same sex (iii)Look
alike in many aspects (iv) Differ in their blood groups.
14. The correct statement about Neanderthal man is:
(i)the first human like hominid. (ii) started agriculture
(iii)ate meat and walked erectly (iv)buried the dead
15. The inheritance of characteristics through generation is called
“heredity”. In Mental’s Pisum sativum plant, the genetic material
present is---- (i)DNA (ii)RNA (iii)Protein (iv)Cytoplasm
16. ----------- is alternate expression of same gene.
(i)Alleles (ii) Variation (iii) Speciation (iv)Gene, Allelomorph
17. --------worked out the first scientific experimental study on
heredity. (i)Ian Wilmut (ii) Gregor Johann Mendel
(iii)Charles Darwin (iv)lamarck
18. Biotechnologically synthesized vitamin---------- is used, to cure
pernicious anaemia.
(i)Vitamin A(ii) Vitamin B (iii)Vitamin B12 (iv) Vitamin C
19. Diabetes is treated by the biotechnologically produced--
(i)Enzyme (ii) Insulin (iii)Vitamin (iv)Vaccine
20. Pick out the case of healthy state of an individual.
(i) Mr. X is recovering from an infections disease.
(ii) Mr. Y is taking insulin injection every day.
(iii) Mrs. Z is very much depressed.
(iv) Mr.K is attending to his duty and spends time joyfully
21. Which one of the following is not socially balanced?
(i) He enjoys a birthday party.
(ii) He behaves rudely over trivial matters.
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(iii) He adjusts well to the surrounding situation.
(iv) He attends to his ailing mother at the hospital.
22. ---------------- is a bacterial disease.
(i)Meningitis (ii) Rabies (iii) Tetanus (iv)small pox
23. One of the following is transmitted through air. Find it out.
(i)Tuberculosis (ii)Menigitis (iii) Typhoid (iv) Cholera
24. The most serious form of malaria is caused by Plasmodium
(i)Ovale (ii) malariae (iii) falciparum (iv) Vivax
25. An example of protozoan infecting our intestine is------
(i) Plasmodium vivax (ii)Entamoeba histolytica (iii) trypanosoma
gambiense (iv) taeia solium
26. One of the means of indirect transmission of a disease is----
(i) Sneezing (ii) coughing (iii) through placenta (iv)using
utensils of patients
27. When antibodies extracted from other animals are injected into your
body, what kind of immunity do you gain?
(i)Artificially active acquired immunity
(ii)Artificially passive acquired immunity
(iii)Naturally active acquired immunity
(iv)Naturally passive acquired immunity
28. The first vaccine injected into a just born baby is------------
(i)Oral polio (ii)DPT (iii)DPTand Oral polio (iv)BCG
29. In order to lead a healthy life a person should enjoy physical ,mentel and
social well-being. If a person lacks any one of them ,.then that person is
suffering from---------
30. A child eats food rich in carbohydrates and avoids protein in its diet.
Which type of nutritional deficiency will affect that child?
(i)Kwashiorkar (ii)Nyctalopia (iii)Diabetas (iv)Down syndrome
31. Assertion(A)Explusion of excess unused glucose in the blood through
urine is observed in a Diabetic mellitus person.
Reason(R): insulin is not produced in sufficient quantity by pancreas.
(i)Both ‘A’ and ‘R’ are ture and ‘R’ explains ‘A’. (ii)Both ‘A’ and ‘R’are ture but ‘R’ doesn’t explain ‘A’ (iii)Only ‘A’ is ture but ‘R’ is flase.
(iv)A is flase but ‘R’is flase.
32. Pick out a non-antigen. Entry of-------------- (i)Germ (ii)Toxins of
germs (iii)New forms of protein (iv)Mother’s Milk
33. The viral disease is-----------------
(i)Rabies (ii)Cholera (iii)Malaria (iv)Typhoid
34. In the following Plasmodium which one cause malignant and fatel
(i)Plasmodium vivax (ii)Plasmodium malariae (iii)Plasmodium
falciparum (iv)Plasmodium ovale
35. Pick out the protein deficiency disease
(i)Typoid (ii)Malaria (iii)Marasmus (iv)AIDS
36. Unipolar neurons are found in the______ a) Brain
b) Spinal Cord c) Embryonic nervous tissue d) Adult nervous tissue
37. The sensory organs contain____________
a) Unipolar neuron b) Bipolar neuron
c) Multipolar neuron d) Medullated neuron
38. The part of brain which controls emotional reactions in our body
is____ a) Cerebellum b) Cerebrum c) Thalamus d) Hypothalamus
39. One of the following is a part of the brain stem. Pick it out.
a) Forebrain and midbrain b) Midbrain and hindbrain
c) Forebrain and hindbrain c) Forebrain and spinal cord
40. Spinal nerves are___________ a) sensory nerves b) motor nerves
c) mixed nerves d) innervating the brain
41. An endocrine gland found in the neck is ___________
a) adrenal gland b) pituitary gland c) thyroid gland d) pancreas
42. An endocrine gland which is both exocrine and endocrine is the _____
a) pancreas b) pituitary c) thyroid d) adrenal
43. Normal blood glucose level in 1 dl of blood is__________
a) 80-100 mg/dl b) 80-120 mg/dl c) 80-150 mg/dl d) 70-120 mg/dl
44. The “T” Iymphocytes are differentiated to resist infection in the ___
45. a) parathyroid gland b) lymph gland c) thymus gland d) adrenal gland
46. In Meiosis-1, the pairing of homologous chromosomes take place during
__________ stage. a) leptotene b) zygotenec) pachytene d) diplotene
47. The two systems of the human body which help in the control and co-
ordination of metabolic activities are _____
a) digestive and circulatory b) respiratory and circulatory
c) excretory and skeletal d) nervous and endocrine
48. Neurotransmitters are released at the synapse by_____
a) Tips of Dendrites b) Synaptic Knobs
c) Organelles of Cyton d) Myelin sheath of Axon
49. The endocrine gland related to the immune system is__________
a) Thyroid b) Thymus c) Adrenal d) Pineal
50. The hormone administered by doctors to a pregnant woman to help in
childbirth during the time of natural delivery is____________
a) Oestrogen b) Progesterone c) Insulin d) Relaxin
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51. The important event of meiosis is the crossing over. It occurs during
childbirth during the time of natural delivery is______________
a) Leptotene b) Pachytene c) Diplotene d) Zygotene
52. Reduction division is the process by which gametes are produced. The
cells in which reduction division take place are __
a) germinal epithelial cells b) the sensory epithelial cells
c) cuboidal epithelial cells d) columnar epithelial cells
53. In Amoeba, the cell division takes place___________
a) involving changes in the chromatin reticulum
b) without involving changes in the chromatin reticulum
c) leading to reduction in the number of chromosomes
d) without dividing the nucleus.
54. Pick out the item which has sequential arrangement.
a) Zygotene Leptotene Pachytene Diplotene Diakinesis
b) Diakinesis Zygotene Leptotene Pachytene Diplotene
c) Laptotene Zygotene Pachytene Diplotene Diakinesis
55. Polio is a viral disease and the affected child suffers from physical
disability of limbs. Which system of the body is mostly affected due to
this infection? a) Nervous system b) Digestive system
c) Respiratory system d) Excretory system
56. Blinking when a beam of light is suddenly focussed on the eyes and
sudden withdrawal of hand upon touching a hot body are some of the
examples of reflex actions. Which part of the central nervous system acts
as the centre these actions?
a) Forebrain b) Spinal cord c) Hindbrain d) Synapse
57. The following are the parts of a neuron:
a) Axon b) Terminal branches c) Cyton d) Dendrites
The correct pathway of a nerve impulse through these parts are
__________ a) badc b) dcab c) bdac d) adbc
58. For minor surgeries in the body, doctors administer local anaesthesia
to a part of the body so that the pain will not be felt by the patient. At
which part, do you think, the nerve impulse is being arrested due to the
effect of anaesthesia? (i) at cyton (ii) at axon
(iii) at synapse (iv) in the middle of axon
59. Assertion (A): All spinal nerves are mixed nerves.
Reason (R): Each spinal nerve has a sensory root and a motor root.
(i) Both ‘A’ and ‘R’ are true and ‘R’ explains ‘A’ (ii) Both ‘A’ and ‘R’ are true but ‘R’ doesn’t explain ‘A’. (iii) Only ‘A’ is true but ‘R’ is false. iv)‘A’ is false but ‘R’ is true.
60. The method of reproduction in unicellular organisms like amoeba
and bacteria in which they split into two equal halves and produce new
ones is called__________ a) fragmentation b) binary fission
c) budding d) spore formation
61. In sexual reproduction of following plants, the first event involved in this
i_____a) fertilization b) germination c) regeneration d) pollination
62. Which of the following statement is true ?
a) Thin/walled non-mobile spores are called zoospores.
b) A motile asexual spore produced by some algae, bacteria and fungi
are Akinetes. c) Uninucleate, non-motile. asexual spores produced by
fungus are called conidia. d) Thick-walled vegetative cells produced by
algae during adverse conditions are called aplanospores.
63. The fertilized ovary is a fruit. The fruit that develops from a single
flower with multi carpellary, apocarpous superior ovary is__________
a) Aggregate fruit b) Composite fruit c) Simple fruitd) Multiple fruit
64. If a water soaked seed is pressed, a small drop of water comes out
through the_____a) stomata b) lenticels c) micropyle d) radicle
65. The mango fruits is called a stone fruit because it has____a) skinny
epicarp b) stony mesocarp c) fleshy endocarp d)hard endocarp
66. Pick out the wrong statement.
a) In a dicot seed there is a short longitudinal whitish ridge called the
raphae. b) The minute opening in a dicot seed is known as micropyle.
c) The rudimentary stem portion is known as radical.
d) The rudimentary root portion is called radical.
67. Consider the following statement regarding the dispersal of fruits and
seeds by wind and select the correct answer.
a) Fruits and seeds are dispersed with a sudden jerk by an explosive
mechanism.
b) The fruits of tridax carry a persistent calyx modified into pappus.
c) The fruits of xanthium have sharp pointed stiff hooks.
d) The mesocarp of coconut is fibrous.
68. The product of triple fusion which acts as nutritive tissue for the
development of an embryo is __________
a) zygote b) placenta c) scutellum d) endosperm
69. The disadvantage of self-pollination is ____________
a) There is no wastage to pollen grains
b) The seeds are less in number
c) Self-pollination is sure in bisexual flowers
d) Flowers need not depend on agents of pollination.
70. The flower is important to a plant because it helps in ______________
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a) attracting b) production of nectar
c) pollination d) sexual reproduction
71. The essential organs of the flower are ______________
a) Calyx Corolla b) Androecium and Gynoecium
c) Calyx and Androecium d) Corolla and Gynoecium
72. Cross pollination is important for producing___________
a) new varieties of plants b) plants with better growth
c) disease resistant plants d) all of above
73. Anemophily occurs in ____________
a) Vallisneria b) Grass c) Coconut d) Datura
74. Which of the following structure / arrangement favour entamophily ?
a) Pollen grains with wings and feathery stigma b) Colourful petals and
nectar secretion c) A bunch of flowers with less pollen
d) Pollen grains with mucous covering.
75. Post-fertilization, the ovule changes into a / an __________
a) seed b) fruit c) endosperm d) pericarp
76. Which of the following is correctly matched ?
a) False fruit – mango b) Multiople fruit – apple
c) Aggregate fruit – polyalthia d) Caryopsis - banana
77. Identify the mismatched pair. a) Legume – Dry dehiscent fruit
b) Cypsela – Dry indehiscent fruit
c) Pome – Fleshy fruit d) Regma – Resembles legume
78. A seed dispersed by wind is called __________
a) Autochory b) Anemochoryc) Hydrochoryd) Zoochory
79. These are all schizocarpic fruit
a) Legume,Follicle,Capsuleb)Berry, Hesperidium, Pome
80. The integuments of the Ovule develop into
a) Ovary b) Seed Coat c) Egg d) Seed
81. Which is the female reproductive part of a flower ?
a) Calyx b) Corolla c) Androecium, d) Gynoecium
82. Which of the following groups contain only bio-degradable items?
(i) Grass, flowers and leaves (ii) Grass, wood and plastic
(iii) Fruit peels, cake and plastic (iv) Cake, wood and glass
83. Which of the following constitutes a food chain
(i) Grass, Wheat and Mango, (ii) Grass, goat and Human,
(iii) Goat, cow and elephant, (iv) Grass, fish and goat,
84. Which of the following are environmental friendly practices?
(i) Carrying cloth bags for shopping (ii) Switching off light and fans when
not in use (iii) Using public transport (iv) All the above
85. What is called as ‘black gold’?
(i) Hydrocarbons (ii) Coal (iii) Petroleum (iv) Ether
86. Based on the food chain, pick the odd one out:
plants grasshopper frog tiger snake
87. Example for product of green chemistry is:
i) plastic (ii) paper (iii) bioplastics (iv) halogen flame retardents
88. ____ is a green house gas which causes climate change and global
warming. (i) Hydrogen, (ii) Oxygen, (iii) Nitrogen, (iv)
Carbon di oxide
89. The _________ form decomposers in the pond ecosystem.
(i) plants (ii) bacteria (iii) frog (iv) phytoplanktons
90. _________ is used in seeding colds. (i) Potassium iodide (ii)
Calcium carbonate (iii) Sulphur di oxide (iv) Ammonium phosphate
91. An example for fossil fuel is:
(i) Copper (ii) Iron (iii) Magnesium (iv) Coal
92. Air pollution is caused by transport exhaust fumes and emission of
gases like SO2, CO2, NO2 from industries. Similarly, water pollution is
caused by _________. (i) sewage (ii) crop cultivation (iii) rain (iv)
soil erosion
93. If wild animals are killed, what difficulty would we face?
(i) imbalance in nature (ii) decrease in fog rain
(iii) decrease in population (iv) increase in rain
94. Water is an essential commodity for survival. What can we do to
help increase water resources? (i) deforestation (ii) reducing the use
of vehicles (iii) the burning of the wastage (iv) afforestation
95. The tiger and the lion are carnivores. Likewise the elephant and the
bison are _________.
96. Assertion (A): Coal and petroleum are called fossil fuels.
Reason (R): Fossil fuels are formed from the remains of dead organisms
after millions of years. I)Both ‘A’ and ‘R’ are true and ‘R’ explains ‘A’. ii) Both ‘A’ and ‘R’ are true and but ‘R’ doesn’t explain ‘A’
iii) Only ‘A’ is true but ‘R’ is false. iv)‘A’ is false but ‘R’ is true.
97. Compressed Natural Gas (CNG) is considered a better fuel than
coal/petroleum, because _________.
98. Now-a-days water bottles and lunch boxes are made from agricultural
products like fruit pulp. These are called _________.
99. _________ is the chief component of coal.
(Sulphur, Carbon, Hydrogen, Nitrogen)
100. Which of the following are non-biodegradable?
(Aluminium cans, Hay, Dry twigs, Animal dung, Plastic waste)
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IDEAL MATHS COACHING CENTRE, 192, PWD Road, NAGERCOIL. 9843322969
SCIENCE (BIO) LESSON 7 Conservation and Environment MARKS:60 CLASS:X ART:13
CHOOSE THE CORRECT ANSWER 15x1=15
1. Which of the following groups contain only bio-
degradable items?
(i) Grass, flowers and leaves (ii) Grass, wood and plastic
(iii) Fruit peels, cake and plastic (iv) Cake, wood and glass
2. Which of the following constitutes a food chain
(i) Grass, Wheat and Mango, (ii) Grass, goat and Human,
(iii) Goat, cow and elephant, (iv) Grass, fish and goat,
3. What is called as ‘black gold’?
(i) Hydrocarbons (ii) Coal (iii) Petroleum (iv) Ether
4. Example for product of green chemistry is:
i) plastic (ii) paper (iii) bio plastics (iv) halogen
flame retardents
5. _________ is a green house gas which causes climate
change and global warming.
(i) Hydrogen, (ii) Oxygen, (iii) Nitrogen, (iv)
Carbon di oxide
6. The _________ form decomposers in the pond
ecosystem.
(i) plants (ii) bacteria (iii) frog (iv) phytoplanktons
7. _________ is used in seeding colds.
(i) Potassium iodide (ii) Calcium carbonate
(iii) Sulphur di oxide (iv) Ammonium phosphate
8. An example for fossil fuel is:
(i) Copper (ii) Iron (iii) Magnesium (iv) Coal
9. Air pollution is caused by transport exhaust fumes and
emission of gases like SO2, CO2, NO2 from industries.
Similarly, water pollution is caused by _________.
(i) sewage (ii) crop cultivation (iii) rain (iv) soil erosion
10. If wild animals are killed, what difficulty would we
face?
(i) imbalance in nature (ii) decrease in fog rain
(iii) decrease in population (iv) increase in rain
11. The tiger and the lion are carnivores. Likewise the
elephant and the bison are _________.
12. Compressed Natural Gas (CNG) is considered a better
fuel than coal/petroleum, because _________.
13. Now-a-days water bottles and lunch boxes are made
from agricultural products like fruit pulp. These are called __
14. _________ is the chief component of coal.
(Sulphur, Carbon, Hydrogen, Nitrogen)
15. Which of the following are non-biodegradable?
(Aluminium cans, Hay, Dry twigs, Animal dung, Plastic
waste)
Answer the following 15x2=30
16. Classify the following into producers, consumers,
decomposers.
(i) butterfly (ii) grass hopper (ii) calottes
(iv) snakes (v) shoe flower (vi) nitrobacteria
17. Living organisms adapt themselves according to their
habitat. Match the following:
a. Fish Wings
b. Camel Hard skin
c. Frog Fins
d. Birds Hind limbs with web
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http://www.trbtnpsc.com/2013/09/10th-study-materials.html
IDEAL MATHS COACHING CENTRE, 192, PWD Road, NAGERCOIL. 9843322969
SCIENCE (BIO) LESSON 7 Conservation and Environment MARKS:60 CLASS:X ART:13
18. Fill in the blanks
(i) Animals give out _________ through respiration.
(ii) In the presence of sunlight, plants prepare _________.
19. Bacteria and fungi are responsible for the decay of dead
plants and animals. Decaying matter is recycled to grow
plants. What do we call this?
20. Fill in the blanks with suitable answers from those given
in the brackets. (harmful, heavy metals, carbon dioxide,
sulphur particles)
Generation of waste products which contain Mercury,
Uranium. Thorium, Arsenic, and other _________ are
_________ to human health and environment. _________
present in the coal will cause acid rain and the release of
_________, a green house gas, causes climate change and
global warming.
21. Depict a food chain by placing the following organisms
in the correct trophic levels: (snake, grass, eagle, frog,
grasshopper)
22. Show an aquatic food chain using the following
organisms.
(Small fish, Phytoplanktons, Kingfisher, Zooplanktons)
23. Study the food chain below. Correct it and convert into
a pyramid of energy. Mulberry Sparrow Caterpillar
Kite.
24. Name the plants which are used in the production of
bio-plastic.
25. Pick the odd one out:
(a) Plant, grasshopper, frog, tiger, snake.
(b) Anaimalai, Point Calimere, Vedanthangal,
Mundanthurai
26. A. Assertion: Petroleum is called as Black gold.
R. Reason: These are used in manufacture of detergents,
fibres, polythene and other plastic substances.
a) A is correct, R is wrong b) A is correct, R is correct
c) A is worng, R is correct d) A is wrong, R is wrong
27. a) Which one of the following is an autotroph. (Plants,
Cat, Lion, Fish)
b) What are autotrophs?
28. Define pollution.
29. Define global village.
30. Why is petroleum called as ‘Black Gold’?
Answer the following 3x5=15
31. In your locality people are affected due to water scarcity.
What measures will you take to deal with the problem of
water scarcity?
32. We List out the harmful effects of burning coal.
33. (a) What is green chemistry?
(b) Write any tow principles of green chemistry.
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http://www.trbtnpsc.com/2013/09/10th-study-materials.html
IDEAL MATHS COACHING CENTRE, 192, PWD Road, NAGERCOIL. 9843322969
SCIENCE (Che) LESSON 11 Chemical reaction MARKS:50 CLASS:X ART:19
Part A Choose the correct answer 10x1=10
1.Zn + 2HCl ZnCl2 + H2 The above reaction is an
example of (i)Combination reaction (ii)Double
displacement reaction (iii)Displacement reaction
(iv)Decomposition reaction
2.A reddish brown coloured element ‘X’ on heating in air
becomes black coloured compound ‘Y’. X and Y are ------- and
-------- (Cu, CuO/ Pb,PbO)
3.Chemical volcano is an example of-------- (Combination
reaction/decomposition reaction)
4.When crystals of lead nitrate on heating strongly produces----
----- gas and the colour of the gas is--------
5.Aluminium can displace Zinc metal from aqueous solution of
Zinc sulphate because-------.
( zinc is more reactive than aluminium/aluminium is more
reactive than zinc).
6. Vinegar is present in acetic acid. Curd contains------(Lactic
acid/ Tartaric acid)
7.pH = -log10[H+]. The pH of a solution containing hydrogen
ion concentration of 0.001M solution is -------. (3/11/14)
8. 2KClO3 MnO2 2KCl + 3O2
In this chemical reaction MnO2 acts as
(Reactant, product, Catalyst, Promoter)
9. Metal + Acid Salt + ---------.
(Oxygen, Water, Carbon, Hydrogen)
10.pH + pOH=14, If the value of pOH of a substance is 3, its
pH is (3, 11,14, 1)
Part B Answer any 10 10x2=20
1. What type of chemical reaction takes place when
(i) Limestone is heated? Explain
(ii) A Magnesium ribbon is burnt in air?
2. The hydroxyl ion concentration of a solution is 1.0 x 10-8
M.
What is the pH of the solution?
3. Why does the colour of Copper sulphate change when an
iron nail is kept in it? Justify your Answer.
4. When lead powder is added to copper chloride solution, a
displacement reaction occurs and solid copper is formed.
(i) Write the equation for the reaction.
(ii) Why does the displacement reaction occur?
5. Relate the information given in all the four columns of the
table.
Compound Chemical
Formula Chemical name Use
1.Washing
soda
CaOCl2 Calcium sulphate
hemihydrate
For making statues
2.Baking
soda
Na2CO3 Sodium
bicarbonate
Softening of hard w
3.Bleaching
Powder
CaSO4.1/2
H2O
Sodium carbonate For making cake
4.Plaster of
paris
NaHCO3 Calcium
oxychloride
bleaching
6. Match the following:
Source Acid present
Lemon - Lactic acid
Apple - Tartaric acid
Grapes - Citric acid
Curd - Malic acid
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http://www.trbtnpsc.com/2013/09/10th-study-materials.html
IDEAL MATHS COACHING CENTRE, 192, PWD Road, NAGERCOIL. 9843322969
SCIENCE (Che) LESSON 11 Chemical reaction MARKS:50 CLASS:X ART:19
7. The hydroxyl ion concentration of a solution is 1.0 x 10-9
M.
What is the pH of the solution?
8. Write the uses of Baking soda (NaHCO3).
9. Analyse the table and fill up the blanks
Indicator Colour in acid Colour in
base
Litmus ----------------- Red
Phenolphthalein Colourless ------------
10. What is a catalyst? Give example.
11. Explain endothermic reaction & exothermic reaction.
Part C Answer the following
1. Redox reactions are reactions during which electron transfer
takes place. Here magnesium atom transfers two electrons one
each to the two chlorine atoms.
(i) What are the products of this reaction?
(ii) Write the balanced equation for the complete reaction.
(iii) Which element is being oxidized?
(iv) Which element is being reduced?
(v) Write the reduction part of the reaction.
2. When zinc and copper (II) sulphate are together, the
following redox reaction occurs:
Zn(s) + CuSO4(aq) ZnSO4(aq) + Cu(s)
(i) What does the word redox stands for?
(ii) Show how electrons are transferred in the reaction.
(iii) Write the ionic equation for the redox reaction.
3. The hydrogen ion concentration of a solution 1 x 10-8
M
(i) What is the pH of the solution?
(ii) What is the pOH of the solution?
(iii) Is the given solution, acidic or basic?
4.Sodium hydroxide and hydrochloric acid react as shown in
this equation.
NaOH + HCl NaCl +H2O
(aq) (aq) (aq) (l)
(i) Which type of chemical reaction is this?
(ii) The reaction is exothermic. Explain what that means.
(iii) Differentiate exothermic reaction and endothermic
reaction.
(iv) Iv)What happens to the temperature of the solution as the
chemicals react?
(v) 5. Explain classification of an acid.
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IDEAL MATHS COACHING CENTRE, 192, PWD Road, NAGERCOIL. 9843322969
SCIENCE (Che) LESSON 11 Chemical reaction MARKS:50 CLASS:X ART:19
7. The hydroxyl ion concentration of a solution is 1.0 x 10-9
M.
What is the pH of the solution?
8. Write the uses of Baking soda (NaHCO3).
9. Analyse the table and fill up the blanks
Indicator Colour in acid Colour in
base
Litmus ----------------- Red
Phenolphthalein Colourless ------------
10. What is a catalyst? Give example.
11. explain endothermic reaction & exothermic reaction.
Part C Answer the following
1. Redox reactions are reactions during which electron transfer
takes place. Here magnesium atom transfers two electrons one
each to the two chlorine atoms.
(vi) What are the products of this reaction?
(vii) Write the balanced equation for the complete reaction.
(viii) Which element is being oxidized?
(ix) Which element is being reduced?
(x) Write the reduction part of the reaction.
2. When zinc and copper (II) sulphate are together, the
following redox reaction occurs:
Zn(s) + CuSO4(aq) ZnSO4(aq) + Cu(s)
(i) What does the word redox stands for?
(ii) Show how electrons are transferred in the reaction.
(iii) Write the ionic equation for the redox reaction.
3. The hydrogen ion concentration of a solution 1 x 10-8
M
(i) What is the pH of the solution?
(ii) What is the pOH of the solution?
(iii) Is the given solution, acidic or basic?
4.Sodium hydroxide and hydrochloric acid react as shown in
this equation.
NaOH + HCl NaCl +H2O
(aq) (aq) (aq) (l)
(vi) Which type of chemical reaction is this?
(vii) The reaction is exothermic. Explain what that means.
(viii) Differentiate exothermic reaction and endothermic
reaction.
(ix) Iv)What happens to the temperature of the solution as the
chemicals react?
(x) 5. Explain classification of an acid.
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http://www.trbtnpsc.com/2013/09/10th-study-materials.html
IDEAL MATHS COACHING CENTRE, 192, PWD Road, NAGERCOIL. 9843322969
SCIENCE (Che) LESSON 11 Chemical reaction MARKS:50 CLASS:X ART:19
Part A Choose the correct answer 10x1=10
1.Zn + 2HCl ZnCl2 + H2 The above reaction is an
example of (i)Combination reaction (ii)Double
displacement reaction (iii)Displacement reaction
(iv)Decomposition reaction
2.A reddish brown coloured element ‘X’ on heating in air
becomes black coloured compound ‘Y’. X and Y are ------- and
-------- (Cu, CuO/ Pb,PbO)
3.Chemical volcano is an example of-------- (Combination
reaction/decomposition reaction)
4.When crystals of lead nitrate on heating strongly produces----
----- gas and the colour of the gas is--------
5.Aluminium can displace Zinc metal from aqueous solution of
Zinc sulphate because-------.
( zinc is more reactive than aluminium/aluminium is more
reactive than zinc).
6. Vinegar is present in acetic acid. Curd contains------(Lactic
acid/ Tartaric acid)
7.pH = -log10[H+]. The pH of a solution containing hydrogen
ion concentration of 0.001M solution is -------. (3/11/14)
8. 2KClO3 MnO2 2KCl + 3O2
In this chemical reaction MnO2 acts as
(Reactant, product, Catalyst, Promoter)
9. Metal + Acid Salt + ---------.
(Oxygen, Water, Carbon, Hydrogen)
10.pH + pOH=14, If the value of pOH of a substance is 3, its
pH is (3, 11,14, 1)
Part B Answer any 10 10x2=20
1. What type of chemical reaction takes place when
(i) Limestone is heated? Explain
(ii) A Magnesium ribbon is burnt in air?
2. The hydroxyl ion concentration of a solution is 1.0 x 10-8
M.
What is the pH of the solution?
3. Why does the colour of Copper sulphate change when an
iron nail is kept in it? Justify your Answer.
4. When lead powder is added to copper chloride solution, a
displacement reaction occurs and solid copper is formed.
(i) Write the equation for the reaction.
(ii) Why does the displacement reaction occur?
5. Relate the information given in all the four columns of the
table.
Compound Chemical
Formula Chemical name Use
1.Washing
soda
CaOCl2 Calcium sulphate
hemihydrate
For making statues
2.Baking
soda
Na2CO3 Sodium
bicarbonate
Softening of hard w
3.Bleaching
Powder
CaSO4.1/2
H2O
Sodium carbonate For making cake
4.Plaster of
paris
NaHCO3 Calcium
oxychloride
bleaching
6. Match the following:
Source Acid present
Lemon - Lactic acid
Apple - Tartaric acid
Grapes - Citric acid
Curd - Malic acid
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http://www.trbtnpsc.com/2013/09/10th-study-materials.html
IDEAL MATHS COACHING CENTRE, 192-PWD Road, NAGERCOIL. 9843322969
SCIENCE LESSON 13 CARBON & ITS COMPOUNDS MARKS:50 CLASS:X ART:20
Choose the correct answer: 10x1=10
1. Buckminster Fullerene is the allotropic form to--------
(Nitrogen/Carbon/Sulphur)
2. Even though it is a non-metal, graphite conducts electricity. It is
due to the presense of----------------
(free electrons/bonded electrons)
3. The formula of methane is CH4 and its succeeding member
ethane is expressed as C2H6. The common different of
succession between them is----------(CH2, C2H2)
4. IUPAC name of the first member of alkyne is-------
(ethane/ethyne)
5. Out of ketonic and aldehydic group which is the terminal
functional group?
6. The saturated hydrocarbons form homologous series with the
general formula CnH2n+2. The formula of the second member in
this series is (C2H2, C2H6, C2H4, C2H8)
7. Ethanol on oxidation in the presence of alkaline Potassium
permanganate or acidified potassium dichromate gives the
following acid.
(Prapanoic acid, Butanoic acid, Methanoic acid, Ethanoic acid)
8. The functional group of carboxylic acid is
(-OH, -CHO, -C=O, -COOH)
9. Alkanes have the general formula CnH2n+2. The molecular
formula of the first hydrocarbon is---------
(CH4, C2H4, C2H6, C2H2)
10. A good conductor among the allotropes of carbon is---
(a)Diamond (b)graphite (c)coke (d)charcoal
PART B 10x2=20
1.Write down the possible isomers and give their IUPAC names
using the formula C4H10.
2. Diamond is the hardest allotrope of carbon. Give the reason
for its hardness.
3. An organic compound(A) is widely used as a preservative in
pickles and has a molecular formula C2H4O2. This compound
reacts with ethanol to form a sweet smelling compound(B).
4. An organic compound(A) of molecular formula C2H6O on
oxidation with alkaline KMnO4 Solution gives an acid(B) with
the same number of carbon atoms. Compound A is used as an
antiseptic to sterilize wounds in hospitals. Identify A and B.
Write the chemical equation involved in the formation of B
from A.
5. C2H6O is the molecular formula for two Compounds A and B.
They have different Structural formula. (i) What is this
phenomenon known as? (ii) Give the structural formula of A
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http://www.trbtnpsc.com/2013/09/10th-study-materials.html
IDEAL MATHS COACHING CENTRE, 192-PWD Road, NAGERCOIL. 9843322969
SCIENCE LESSON 13 CARBON & ITS COMPOUNDS MARKS:50 CLASS:X ART:20
and B. (iii)Write down their common and IUPAC names
(iv)Mention the functional groups of A and B.
6. Complete the following:
Formula IUPAC name
1 ------------------- Methane
2 CH3CH=CH2 ---------------
3 HC=CH ---------------
4 ------------------ Ethanol
7. Write the importance of Homogeneous series
8. Match the following
Compounds Functional groups
Alcohol ˃C=O
Aldehyde -OH
Ketone -COOH
Carboxylic acid -CHO
9. Write the common names and IUPAC names of the
following: (a)CH3COCH3 (b)CH3COOH
10. Match the following:
(a) Ethene -C3H4
(b) Ethane -C3H6
(c) Propyne -C2H4
(d) Propene -C2H6
PART C 4x5=20
1. Write a balanced equation using the correct symbols for these
chemical reactions:
(i) Action of hydrogen on ethane in the presence of nickel catalyst.
(ii) Combustion of methane evolving carbon dioxide and water.
(iii) Dehydrogenation of ethanol.
(iv) Decarboxylation of Sodium salt of ethanoic acid.
2. Explain preparation of ethanol from molasses
3. Homologous series predict the properties of the members of
hydrocarbon. Justify this statement through any three
characteristics.
4. Write the common name and IUPAC name of the
following:
CH3CH2CHO , CH3COCH3 , CH3-CH(OH)-CH3
CH3COOH, HCHO
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http://www.trbtnpsc.com/2013/09/10th-study-materials.html
IDEAL MATHS COACHING CENTRE, 192, PWD Road, NAGERCOIL. 9843322969
SCIENCE (phy) LESSON 17. MAGNETIC EFFECT OF ELECTRIC CURRENT AND LIGHT MARKS:50 CLASS:X
Choose the correct answer 13x1=13
1. The magnification produced by a mirror is + 3
1. Then the mirror
is a _________. (concave mirror, convex mirror, plane mirror)
2. The phenomenon of producing an emf in a circuit whenever the
magnetic flux linked with a coil changes is _________.
(magnetic field, mechanical force, induced current)
3. An electric current through a metallic conductor produces around
it. (magnetic field, mechanical force, induced current)
4. The field of view is maximum for ---(plane mirror, concave
mirror, convex mirror) A
5. An object is placed 25cm from a convex lens whose focal length
is 10cm. The image distance is _________.
(50 cm, 16.66cm, 6.66cm, 10cm)
6. Electric power can be transmitted over long distance without
much loss of energy is an important advantage of ………
AC, DC, Both AC & DC, None
7. A device which converts electrical energy into mechanical
energy is……(Generator, Motor, Transformer,
Power supply)
8. The defect myopia can be corrected by using a ……..
(convex lens, concave lens, concave mirror, convex mirror)
9. In Felming’s left hand rule, the fore finger represents the
direction of --- (Magnetic field, Current, Motion of a
conductor, Electric field)
10. Eye lens is a ________
(Double convex lens, Double concave lens,
Plano convex lens, Plano concave lens)
11. Twinkling of stars is due to _______
(Reflection, dispersion,
atmospheric refraction, None of the above)
12. The focal length of a concave lens is 2.m then the power of the
lens is (0.2D, -0.2D, 0.5D, -0.5D)
13. The defect hypermetropia can be corrected by using a ….
(Oersted, Faraday, Edision, Newton)
PART – B 11x2=22
1. Fill in the blanks.
(i) For a motor: a permanent magnet, then commercial motor: _____
(ii) Focal length of a lens: meter, then power of a lens:______
2. Correct the mistake, if any, in the following statements:
i) The magnetic field is a quantity that has magnitude only.
ii) Outside the bar magnet, the magnetic field lines emerge from
the south pole and merge at the north pole.
3. In traffic signals ___________ colour light is used to stop
vehicles because it has ________ wave length.
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http://www.trbtnpsc.com/2013/09/10th-study-materials.html
IDEAL MATHS COACHING CENTRE, 192, PWD Road, NAGERCOIL. 9843322969
SCIENCE (phy) LESSON 17. MAGNETIC EFFECT OF ELECTRIC CURRENT AND LIGHT MARKS:50 CLASS:X
4. Fill the table with the appropriate words given in bracket.
__________ the tooth’s enlarged image
__________ rear side of the vehicle erect imaee
(Convex mirror, Plano convex, Concave mirror, Plane mirror,
Convex lens, Concave lens)
5. Write down the names of the specified parts of the human eye.
(i) Dark muscular diaphragm that controls the pupil.
(ii) The screen where the image is formed by the eye lens.
6. You know that myopia is a common refractive defects of vision.
A person with this defect can clearly see only objects that are
near. Using concave lens of suitable power this defect is
corrected.
(i) Mention the other two types of defects.
(ii) Explain how they can be corrected.
7. Odd one out.
(a) Myopia, hypermetropia. Scurvy, presbyopia
(b) Convex mirror, concave mirror, plane mirror, convex lens.
8. The focal length of a concave lens is 2 m. Calculate the power
of the lens.
9. Find out the odd one:
(a) Angle of incidence, angle of refraction, angle of emergence,
right angle.
b) Convex mirror, concave lens, plane mirror, convex lens.
10. A convex mirror used for rear-view on an automobile has a
radius of curvature of 3 m. If a bus is located at 5 m from this
mirror, find the position and nature of the image.
11. Match the following
1. Electric motor - r
i
sin
sin
2. Electric Generator - dioptre
3. Refractive index - converts electrical energy
into mechanical energy
4. Power of a lens - coverts mechanical energy
into electrical erergy
PART –C Answer any three 3x5=15
1. (a) Draw the given diagram and label the following in the
diagram.
(i) Incident ray
(ii) Refracted ray
(iii) Emergent ray
(iv) Angle of refraction
(v) Angle of deviation
(vi) Angle of emergence
(b) The refractive index of diamond is 2.42, what is the meaning of
this statement in relation to speed of light?
2. Redraw the above diagram.
a) This diagram represents
b) Label the parts of the diagram.
c) Write the principles of the name of the diagram 3. What are the defects of eye? How are these rectified?
4. Explain electric motor.
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http://www.trbtnpsc.com/2013/09/10th-study-materials.html
IDEAL MATHS COACHING CENTRE, 192-PWD Road, Chithambara Nager Jn, NAGERCOIL. 9843322969
SCIENCE LESSON 5 A Representative study of Mammals MARKS:50 CLASS:X ART 24
Choose the correct answer 10x1=10
1. Select important characteristic features of mammals
(i) four-chambered heart (ii) fore-limbs and hind limbs (iii)
milk-producing glands (iv) post anal tail
2. Carnivorous animals use these teeth to tear flesh.
(i) incisors (ii) canines (iii) premolars (iv) molars
3. The Henle’s loop of nephron is mainly responsible for
reabsorption of water in the kindney. Which of the following
has a long loop of Henle in its nephrons to conserve water?
(i) polar bear (ii) camel (iii) frog (iv) whale
4. Which blood cells of mammals are concerned with
immunity? (i) Young Erythrocytes (ii) Leucocytes
(iii) Thrombocytes (iv) Matured Erythrocytes
5. You were given two unlablelle slides with blood smears of an
amphibian and a mammal. You would differentiate the blood
samples by observing the _________.
(i) colour (ii) nature of RBC’s
(iii) nature of WBC’s (iv) contents of plasma
6. For the digestion of cellulose, an enzyme called cellulose is
required. Some mammals lodge cellulose producing bacteria in
their digestive system by offering them food and shelter. These
mammals are mostly ________.
(i) Herbivores (ii) Carnivores (iii) Omnivores (iv)
Sanguivores
7. Forelimbs of mammals have a common basic structure or
pattern, but are different in their usage/function in different
animals. They can be called ________.
(i) Homologous organs (ii) Analogous organs
(iii) Vestigial organs (iv) Rudimentary organs
8. Sensitive whiskers are found in ________.
(i) Bat (ii) Elephant (iii) Deer (iv) Cat
9. Pick out an animal which has a four-chambered stomach.
(i) Elephant (ii) Dolphin (iii) Deer (iv) Kangaroo
10. Normal body temperature of man is _________.
(i) 98.4 – 98.6oF (ii) 96.6 – 96.8
oF
(iii) 94.4 – 98.6oF (iv) 98.4 – 99.6
oF
Answer the following 10x2=20 1. Mention the two unique characteristics of mammals.
2. Give two example each: (i) ruminating mammals
(ii) marine mammals.
3. What type of dentition is seen in mammals? What are elephant
tusks?
4. Mention any four adaptations seen in the camel so that it can
live successfully in deserts.
5. What is echo location? Give an example.
6. Mention the various valves and their location in the human
heart.
7. Name the three important blood proteins seen in plasma. Add a
note on their functions.
8. Which blood cells are without nuclei? What is the advantage of
this condition?
9. Name the protein and the blood-cells responsible for the clotting
of blood.
10. Man uses his fore limb to hold an object and to write.
(i) What is the use of fore limb of horse?
(ii) Write the use of fore limb of rat?
Answer the following 4x5=20
1. What are the Functions of nephron
2. What is adaptation? Mention the adaptations found in the
following mammals. Whales, polar bears, Kangaroo,
Herbivorous mammals.
3. Draw the L.S of kidney and label the parts.
4. With a suitable diagram, describe the structure and functions of
the human heart.
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http://www.trbtnpsc.com/2013/09/10th-study-materials.html
IDEAL MATHS COACHING CENTRE, 192-PWD Road, Chithambara Nager Jn, NAGERCOIL. 9843322969
SCIENCE LESSON 5 A Representative study of Mammals MARKS:50 CLASS:X ART 24
Choose the correct answer 10x1=10
1. Select important characteristic features of mammals
(i) four-chambered heart (ii) fore-limbs and hind limbs (iii)
milk-producing glands (iv) post anal tail
2. Carnivorous animals use these teeth to tear flesh.
(i) incisors (ii) canines (iii) premolars (iv) molars
3. The Henle’s loop of nephron is mainly responsible for
reabsorption of water in the kindney. Which of the following
has a long loop of Henle in its nephrons to conserve water?
(i) polar bear (ii) camel (iii) frog (iv) whale
4. Which blood cells of mammals are concerned with
immunity? (i) Young Erythrocytes (ii) Leucocytes
(iii) Thrombocytes (iv) Matured Erythrocytes
5. You were given two unlablelle slides with blood smears of an
amphibian and a mammal. You would differentiate the blood
samples by observing the _________.
(i) colour (ii) nature of RBC’s
(iii) nature of WBC’s (iv) contents of plasma
6. For the digestion of cellulose, an enzyme called cellulose is
required. Some mammals lodge cellulose producing bacteria in
their digestive system by offering them food and shelter. These
mammals are mostly ________.
(i) Herbivores (ii) Carnivores (iii) Omnivores (iv)
Sanguivores
7. Forelimbs of mammals have a common basic structure or
pattern, but are different in their usage/function in different
animals. They can be called ________.
(i) Homologous organs (ii) Analogous organs
(iii) Vestigial organs (iv) Rudimentary organs
8. Sensitive whiskers are found in ________.
(i) Bat (ii) Elephant (iii) Deer (iv) Cat
9. Pick out an animal which has a four-chambered stomach.
(i) Elephant (ii) Dolphin (iii) Deer (iv) Kangaroo
10. Normal body temperature of man is _________.
(i) 98.4 – 98.6oF (ii) 96.6 – 96.8
oF
(iii) 94.4 – 98.6oF (iv) 98.4 – 99.6
oF
Answer the following 10x2=20 1. Mention the two unique characteristics of mammals.
2. Give two example each: (i) ruminating mammals
(ii) marine mammals.
3. What type of dentition is seen in mammals? What are elephant
tusks?
4. Mention any four adaptations seen in the camel so that it can
live successfully in deserts.
5. What is echo location? Give an example.
6. Mention the various valves and their location in the human
heart.
7. Name the three important blood proteins seen in plasma. Add a
note on their functions.
8. Which blood cells are without nuclei? What is the advantage of
this condition?
9. Name the protein and the blood-cells responsible for the clotting
of blood.
10. Man uses his fore limb to hold an object and to write.
(iii) What is the use of fore limb of horse?
(iv) Write the use of fore limb of rat?
Answer the following 4x5=20
11. What are the Functions of nephron
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http://www.trbtnpsc.com/2013/09/10th-study-materials.html
IDEAL MATHS COACHING CENTRE, 192-PWD Road, Chithambara Nager Jn, NAGERCOIL. 9843322969
SCIENCE LESSON 5 A Representative study of Mammals MARKS:50 CLASS:X ART 24
12. What is adaptation? Mention the adaptations found in the
following mammals. Whales, polar bears, Kangaroo,
Herbivorous mammals.
13. Draw the L.S of kidney and label the parts.
14. With a suitable diagram, describe the structure and functions of
the human heart.
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