ATOMIC ENERGY CENTRAL SCHOOL-4 RAWATBHATA Subject: English Half Yearly Examination (2016-17) Class: XI

Time-Three Hours Max Marks-100

General Instructions:

(i)This paper is divided into 4 Sections: A, B, C and D.

(ii) All sections are compulsory.

(iii) Separate instructions are given with each section and question, wherever necessary. Read these instructions very

carefully and follow them faithfully.

(iv) Do not exceed the prescribed word limit while answering the questions.

(v) Write legibly.

Section A (Reading) A.1 Read the passages given below and write the questions that follows.

The universe or the cosmos, as perceived today, consists of millions of galaxies. A Galaxy is a huge

congregation of the stars which are held together by the forces of gravity. Most of the galaxies appear to be

scattered in the space in a random manner but there are many other which remain clustered into groups. Our

own galaxy called the Milky Way or Akash Ganga which appear as a river of bright light flowing through

the sky, belongs to a cluster of some 24 galaxies called the “local group” The Milky Way is made up of

over a hundred billion sparkling stars, which though quite distant from one another, seem from the earth as

having been placed close together. The two other nearest galaxies are the large Magellanic cloud and the

small Magellanic cloud named after the famous Portuguese navigator, Ferdinand Magellan (1480-1521),

who discovered them.

The universe is infinite both in time and space. Its age was formerly believed to be between, 10-15 billion

years. However in 1999, a NASA's Hubble space telescope project team determined the age of cosmos to

be 12 billion years (plus or minus 10 percent). In June 2001 NASA launched the MAP (Microwave

Anisotropy Probe) to study the cosmic microwave background radiation in greater detail according to

which the exact age of the universe is 13.7 billion years after the theoretical Big Bang. The human

perception of the universe has however been different and different time over the long span of history of

civilization. The innate human inquisitiveness and tireless pursuit of knowledge have brought about

revolutionary changes about our ideas of the universe. The moon and the stars are no longer looked upon as

heavenly bodies or the abodes of gods. Solar and lunar eclipse is no more dreaded as foretellers of natural

calamities. Man's conquest of the moon has now blown off many a myth of the religious testaments.

It was around 6th century BC that men started enquiring into the mysteries of the universe in an endeavor to

rationally analyze the earthly and the heavenly phenomena. They posed to themselves several questions:

What is the universe? Why do things change? Why do things move? What is life? And so on. These

questions were of far-reaching significance to the development of modern science.

Ancient Greek astronomers and mathematicians came up with the view that the earth was a perfect

motionless sphere surrounded by eight other crystalline spheres-the sun, the moon, and the five known

planets, viz Mercury, Venus, Mars, Saturn and Jupiter, which revolved around the earth on seven inner

spheres. The stars were permanently fixed to the outer sphere that marked the edge of the universe.

Ptolemy a second century Greco Egyptian astronomer, synthesized the various data gathered by the early

Greek astronomers and in his book Almagest, presented his system of astronomy based on a Geocentric

(Earth-centered) universe. He maintained that the earth was the center of the universe, and the sun and other

heavenly bodies revolved around the earth. This view of the universe remained firmly entrenched in the

minds of the people right up to the middle of the 16th century. Most men in the Middle Ages strongly

adhered to the Ptolemaic system as they felt that they did indeed, live in a physically limited, rigidly

structured universe centered around a motionless Earth. The Greeks had also estimated the visible universe

to be about 125 million miles in diameter.

The generally accepted view of Geocentric universe received its first real jolt with the publication of the

monumental work by Copernicus (1473-1543) De Revolutionibus Orbium Coelestium (on the Revolution

of celestial Bodies). The main point of the Copernican system are: (i) the sun and the stars are

motionless.(ii) the sun lies at the centre of the universe and the stars at its circumference; (iii) the earth

rotates on its axis taking 24 hours to complete one rotation and (iv) the earth and the planets revolve around

the sun; whereas the Moon revolves around the earth.

This system universe as propounded by Copernicus was more consistent then that of Ptolemy. But its major

flaw was that while it changed the centre of the universe from the earth to the sun it did not enlarge the

limits of the universe as the universe still remained equated with the solar system.

Later Italian astronomer Galileo Galilee (1564-1642) too with his newly invented telescope demonstrated

the validity of the Copernican system through his studies of the phases of the Venus and the moons of

Jupiter that the earth did revolve around the sun. He discovered many new stars and proved that sensory

appearances could be deceptive and that it is our own limitations of perception and the reason that place

boundaries around the universe. To be punished for telling the truth was not uncommon in the 16th century,

and those who dared to do so had to face the wrath of the Church.

Indeed Galileo had to pay the penalty for telling the truth. English scientist Isaac Newton (1642-1727)

demonstrated that forces of gravitation linked all material bodies, is an immense universe and showed that

these bodies move in accordance with strict mathematical laws. God was still the creator but he exercised a

thorough mastery over mathematics and engineering.

Q.A: Pick out the correct option : (1x2 = 2 Marks)

(a) Stars in a congregation are held in cluster by:

i) Akash Ganga ii) gravitation forces iii) galaxies iv) cosmos

(b) Questioning nature of the man has led to the

i) Development of universe ii) Expansion of the milky way

iii) Development of modern world iv) Development of modern science

B Answer the following question: (1x3 = 3 Marks)

(a) Galileo's telescope endorsed the system of universe as ________.

(b) Find the word similar in meaning to 'shining'/twinkling' ________.

(c) Find the word opposite in meaning to 'loosely' ________.

C Who had to pay the penalty for telling the truth in 16th century? (1x1 = 1 Marks)

i) Ptolemy ii) Galileo iii) Ferdinand iv) Copernicus

A2 Read the passages given below and write the questions that follow.

Worm is a software programme that is designed to copy itself from one computer to another, without

human interaction. Unlike a computer virus a worm can copy itself automatically. For example a mass-

milling e-mail worm is a worm that sends copies of itself via e-mail. A network worm makes copies of

itself throughout a network, an internet worm sends copies of itself via vulnerable computers on the

internet, and so on.

Worms can replicate in great volume For example, a worm can send out copies of itself to every contact in

your e-mail address book, and then it can send itself to all of the contacts your contacts, e-mail address

books. Some worms spread very quickly.

They clog networks and can cause long waits for you (and everyone else) to view web pages on the

internet. Examples of some of the computer worms are the Sesser worm, the blaster worm and the conficker

worm.

Trojan are the malicious code which when Triggered cause loss or even theft, of data. Trojans are

associated with remote access programmes that perform illicit operations such as password-stealing or

which allow compromised machines to be used for targeted denial of service attacks. When a Trojan horse

is activated it may access certain files folders or even an entire system. It often creates what is known as a

“trapdoor” or “backdoor” which can then be used to thieve a victim's sensitive information and forward

another location.

A. Pick out the correct option : (1x2 = 2 Marks)

(a) Unusual error messages are an indicator of :

i) Worm infection ii) Virus infection iii) Trojan infection iv) Spam

(b) A mass mailing e-mail worm sends:

i) Multiple copies to one user ii) Multiple copies to multiple users

iii) Copies of itself iv) Single copies to multiple users

B. Answer the following questions: (1x3 = 3 Marks)

(a) What are Trojans associated with?

(b) Pick out the word in the passage similar in meaning to-kind/friend.

(c) Pick out the word in the passage opposite in meaning to illegitimate.

C. Which of the following is not a complete worm? (1x1 = 1 Marks)

a) Blaster worm b) Conflicker worm c) Google worm d) Sesser worm

A3: Read the passage given below and answer the questions that follow.

In Delhi where 80 % of the people are pedestrians in some stage of their commuting, least attention is paid

to pedestrian paths. Delhi‟s sidewalks are too narrow, very poorly maintained and full of potholes poles,

junction boxes and dangerous electrical installation, not to speak of the garbage dumps that stink and stare

at the pedestrian.

Ashram Chowk is a good case in point where thousands of pedestrian change direction from the Mathura

road radial to the Ring Road. A flyover facilitates the automobiles While the pedestrian is orphaned by the

investment hungry authorities. One corner of the Ashram Chowk has a ridiculous imitation wood sculpture

with an apology of a fountain and across the same Chowk you have the open mouthed massive garbage

dump right on the pedestrian path in full exhibition for the benefit of the public. These symbols of poor

taste and object apathy are then connected by narrow dangerous and often waterlogged footpaths for the

helpless pedestrian to negotiate. In the night street lighting in the central median light up the carriageway

for cars and leave the pedestrian areas in darkness.

Delhi's citizens leave home and want to get to their destination as fast they can. No one wants to linger on

the road, no leisure walks, no one looks a stranger in the eye. It is on the pedestrian path that the citizen

encounters head on the poor public management and the excuse called multiplicity of authorities One

agency makes the road, another digs it up to lay cables, third one comes after months to clear up the mess

and the cycle of unaccountability goes on. Meanwhile crores are spent in repairing the carriageway for

vehicles and in construction of the flyovers without a care for the pedestrian below. Solution offerd is to

make an expensive underpass or an ugly foot over bridge, ostensibly for facilitating the pedestrian, while in

reality they only facilitate

the car to move faster at the expense of the pedestrian . Take Kashmiri gate, ITO, Ashram Chowk, AIIMS

or Dhaulakuan, at all these important, at pedestrian crossover points the story is the same. They have pulled

the sidewalk from the pedestrian's feet.

In modern cities across the world, the pedestrian is king. The floor of the city is designed and maintained as

an inclusive environment, helping the physically challenged, the old and the infirm children and the

ordinary citizens to move joyful across the city, Delhi aspires to be world class city Hopefully the

authorities would look once again at the floor of Delhi. The pleasure of strolling on the road is deeply

connected to our sense of citizenship and sense of belonging. Pride in the city grows only on a well

designed floor of the city .

(A) On the basis of your reading of the above passage make-notes on it using heading and sub-heading.

Also use recognized abbreviation wherever necessary (minimum 4) Supply a suitable title. ( 05 Marks)

(B) Write the summary of the passage. (03 Marks)

Section B. Writing

B.1: Your school AVB Bal Vidyalaya, Sirsa has completed 50 years of meritorious service to the society.

As president of the students council of your school, write a notice informing and inviting the names of the

students to participate in the Golden Jubilee Celebration of the school in not more than 50 words. You are

Ram/Radhika. Note: (Mention the name of the chief guest along with other details) 5

B.2.Your school organized Annual Sports Day.Write an article for publication in school magazine. 7

B.3: As the Head boy/Head girl of your school, write a letter to the principal of your school to organize a

trip to Chittorgarh Fort for the students of classes XI & XII so that they can have first hand information of

Chittorgarh, a historical place.

Section C. Grammar

C.1: Correct the following sentences using proper tense forms: 1x5=5

1. I am liking it very much.

2. Madhu is always writing beautiful poems.

3. The moon is going round the earth.

4. She does not finish her work yet.

5. I already sent a telegram to Manish,before I received your phone call

C.2: Fill in the blanks by using suitable determiners from those given in brackets 1x5=5

1. The islands don‟t have _________ money. (many/much)

2. There is not __________ enthusiasm for the idea. (many/much)

3. There is not _______chance of the place attracting a large number of tourists. (many/much)

4. We‟ve rung all the hotels, and there are ________ rooms available.(no/none)

5. _______ guest watched as the President came in. (Each/every)

Section D. Literature

1. Read the extract and answer the questions that follow.

And forever, by day and night, I give back life to my own origin.

And make pure and beautify it.

(For song, issuing from its birth place, after fulfillment, wandering

reck‟d or unreck‟d, duly with love returns)

a) How is the cyclic movement of rain brought out in the poem? 1

b) What is the significance of the world „song‟ here? 1

c) How does the rain benefit the earth? 1

d) Who is „I‟ here? 1

Or

The cardboard shows me how it was

When the two girl cousins went paddling,

Each one holding one of my mother‟s hands,

And she the big girl – some twelve years or so.

a. What does the „cardboard‟ show the poet? 1

b. Why did the two girl cousins hold one of the poet‟s mother‟s hands? 1

c. How old was the oldest girl among the three cousins? 1

d. How did the girls go to the sea beach? 1

2. Answer any three of the following questions in about 30 words. 2x3=06

a. Why did Jonathan call the narrator, the best daddy and the best captain in the world?

b. Why did Khushwant Singh feel repulsive at the mention of his grand mother as a child?

c. How did the sparrows mourn the death of grandmother?

d. Howard Carter‟s investigation was resented by Zahi Hawas, Why?

3. Answer the following questions in about 120 words

Describe King Tut and his family. 7

Or

Give a character sketch of the narrator‟s grandmother.

4. Answer the following questions in about 120 words.

Why did the two boys ultimately return the horse all of a sudden although they had planned to keep it at

least for six months? Or 6

What picture of corrupt human mind you find portrayed in the character of Mrs. Dorling. What is your idea

about her daughter?

5. Answer any four of the following questions very briefly. 4x3=12 a. Why was the Garoghlanian tribe famous?

b. Which incident shows that Uncle Khosrove was indeed crazy?

c. Why did the author resolve to forget the Address?

d. Why did Ms Dorling refuse even to talk to the author?

e. How does rain make the earth beautiful?

6. Answer the following questions.

a. It was the ghost who was haunted by the American family. Explain the statement indicating instances

from the novel. 7

Or

Mention the plans made by the ghost to frighten the Otis family

b. Write a detailed note on the tricks played by the twin on the ghost. 8

Or

Explain the role played by supernatural elements apart from the ghost in the novel.

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ATOMIC ENERGY CENTRAL SCHOOL -4, RAWATBHATA

Half Yearly Examination (XI Class)

Max. Marks 70 Sub. Physics Time : 3 Hours

Important Instructions: (a) All questions are compulsory (b) Q.

No. 1 to 5 is of 1 mark each, 6 to 10 are 2 marks each, 11 to 22 are 3 marks each, 23 is of 4 marks and 24 to 26 are

of 5 marks each. (c) There is no overall

choice but internal choice has been provided in Q.No. 8, 21, 24, 25, 26 (d) Use of calculator is prohibited

1. If projectile is thrown horizontally with speed of 20m/s from height 70m what will be its horizontal velocity

after 2second.

2. Can a body have zero velocity and still accelerating?

3. Is it possible that your cycle has a northward velocity but southward acceleration If

4. If v-t graph of uniform accelerated motion of two objects make angle 300∙ and 60 with time axis find ratio of

their acceleration.

5. If x + ct3 where x is distance and t is time then find dimensional of a, band c.

6. Write any two characteristic of unit.

7. What do you mean by limiting equilibrium?

8. Draw the v-t graph for (a) positive acceleration (b) negative acceleration (c) zero acceleration.

OR

Draw the x-t graph for (a) positive velocity (b) negative velocity (c) rest.

9. Can a quantity have unit but still be dimensionless

10. What do you mean by angle of friction? Deduce the relation between angle of friction and coefficient of

friction.

11. If position of object is given by following expression find velocity at t =2sec x= 3t2 + 2t + 2

12. Check the correctness of the equation FxS = 1/2 mv2 - ½ mu2 Where F is force S is distance m is mass u

and v re initial and final velocity.

13. Convert 200 N/m2 into CGS system using dimensional analysis method?

14. The equation of state for real gas is given by ( p + a/v2 ) (v- b) = RT where P is pressure v, volume and T

temperature R gas constant Find dimensions of a and b.

15. Define null vector. Write its need and physical significance.

16. Prove that area enclosed by v-t graph and time axis in uniform motion is equal to distance traveled by

object.

17. Prove that addition of vector obeys commutative law.

18. Derive second equation of motion using calculus OR

Derive third equation of motion using calculus.

19. Define following: A. Position Vector B. Displacement Vector. C. Relative Velocity.

20. Derive expression for centripetal acceleration.

21. In harbor wind is blowing at the rate 72km/h and flag on mast on anchored shipped in harbor flatters along

N E direction. If the ship starts at a speed of 51 km per hour to north, what is the direction of flag on the

mast of ship?

Or

A body starts from rest accelerates uniformly at the rate of 10 cm/s2 and retard uniformly at the rate of 20

cm/s2 find least time in which it can complete the journey of 5 km if maximum velocity attained by the

body is 72 km per hour.

22. A policeman moving on a highway with a speed of 30 km/hour fires a bullet at a thief’s car speeding away in

the same direction with speed of 192 km/h. If muzzle speed of bullet is 150 m/s with what speed does the

bullet hit the thief’s car.

23. While travelling on highway ,many of us have to over speed, cross the prescribe limit ,especially when there

are no visible object 0n the path and the traffic police .we simply forget that speed thrills but kills. Read

passage and answer following (i) what are danger and risk of over speeding (ii) From this study ,what value

do you learn in day to day life?

24. State law of triangle for addition of two vectors. Give its analytical treatment. Or

Derive expression for velocity of car moving on banked circular road banking at an angle and write

advantages of banked road.

25. A projectile thrown from ground making angle with horizontal define following and find expression for

them (1) Time of flight (ii) Horizontal range (iii) Maximum height.

Or

Derive expression for trajectory of projectile When projectile thrown from ground making angle with

horizontal

26. What do you mean by orthogonal resolution of vector in 2 dimension explain with the diagram.

Or

Prove that maximum possible fractional error in product and division of two physical quantities is equal to

some of fractional error in their component quantities.

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Atomic Energy Central School No. 4, Rawatbhata HALF-YEARLY Examination 2016-17

M.M- 70 Subject- Chemistry Class- XI-science Time- 3 hrs Note-(i) Attempt all the questions.

(ii) Q 1 to 5 are very short – answer questions and cary 1 mark each.

(iii) Q 6 to 10 are short – answer questions and cary 2 marks each.

(iv) Q 11 to 22 are also short – answer questions and cary 3 marks each.

(v) Q 23 is value based question and caries 4 marks.

(vi) Q 24 to 26 are long – answer questions and cary 5 marks each.

1. What is the role of a chemical ‘taxol’ in human body? 1 2. Identify group no. of an element whose outer electronic configuration is 3s23p4? 1 3. Define limiting reagent. 1 4. What is third law of thermodynamics? 1 5. What is extensive property? write one example 1 6. Draw resonating structures of carbonate ion. 2 7. Write different types of van der waal’s attractive forces with their causes. 2 8. State four main demerits of Bohr’s theory. 2 9. Define the following- 2

(i) Mole fraction (ii) Precision (OR) Define the following- (i) amu (ii) molecular formula

10. (i) What is meant by term limiting reagent in a chemical reaction? 2 11. (ii) State laws of multiple proportions. 12. (i) Write electronic configuration of cuprous ion (Cu Z=29).

(ii) Write the values of ‘l’ and ‘ml’ for 2px1 electron. (iii) What is photoelectric effect? 3

13. State Heisenberg uncertainty principle. Calculate uncertainty in position of a dust particle with mass equal to 1mg if uncertainty in its velocity is 5.5 x 10-20 m s-1. 3

14. Explain ionization enthalpy. Account for - 3

(i). Be has higher value of ∆iH than B. (ii). O has lower value of ∆iH than N and F? (OR) Explain electron gain enthalpy. Which of the following pairs of elements would have a more negative electron gain enthalpy? (i). O or F (ii). F or Cl

15. Calculate the total pressure in a mixture of 8.0g of O2 and 4.0g of H2 confined in a vessel of 1dm3 at 270C (R = 0.083 bar dm3 K-1 mol-1). 3

16. (i). What do you meant by entropy of a system? (ii).

Derive the relation between ∆H and ∆U for a gaseous reaction. 3 17. Express the change in internal energy of a system when:-

(a) No heat is absorbed by the system from the surroundings, but work (w) is done on the system. What type of wall does the system have? (b) No work is done on the system, but ‘q’ amount of heat is taken out from the system and given to the surroundings. What type of wall does the system have? (c) ‘w’ amount of work is done by the system and ‘q’ amount of heat is supplied to the system. What type of system would it be? 3

18. Write MO configuration of O2 2-.Also find bond order and magnetic nature. 3 19. Calculate percentage composition of each element in oxalic acid hydrated. 3 20. What is anomalous behavior of period two elements? Explain. 3 21. Define hybridization. Draw and explain shape of ethyne. 3

PTO

22. Calculate molarity and molality of 49 % w/w H2SO4 with density 1.24 g/cm3. 3 23. (i) Write name and symbol of element with Z= 117.

(ii) Mention four important features of transition elements. 3 24. Nita’s younger sister was having cold drinks with ice cubes floating over the liquid.

The little girl asked Nita ―Every solid form has higher density than its corresponding liquid form, but why is it that ice alone is lighter and floats on water? Nita tried to explain the reason based on a special type of bonding in water. Answer the following: a) What is that special bonding Nita is referring to? Draw a pictorial representation of that. b) Nita also explained the importance of water as a good solvent. What would she have given the reason for its polarity? c) What value does Nita have towards the subject and towards her sister? 4

25. (i) Write and explain Pauli’s exclusion principle with example. (ii) The work function for cesium atom is 1.9 eV. Calculate (a) the threshold wavelength and (b) the threshold frequency of the radiation. If the cesium element is irradiated with a wavelength 500 nm, calculate the kinetic energy and the velocity of the ejected photoelectron.

2+3=5 (OR)

(i) Explain (n+l) rule with example. (ii) The ejection of the photoelectron from the silver metal in the photoelectric effect experiment can be stopped by applying the voltage of 0.35 V when the radiation 256.7 nm is used. Calculate the work function for silver metal.

26. (i) The enthalpies of combustion of graphite and diamond are 393.5 kj and 395.4 kj respectively. Calculate the enthalpy change accompanying the transformation of 1 mole of graphite into diamond.? (ii) State Hess’s law. Give its two applications. (iii)Define molar heat capacity. 2+2+1=5

(OR) (i) Calculate the standard enthalpy of formation of one mole of C6H12O6 (s), if the combustion of one mole of glucose takes place at 298 K and 1 atm and after combustion CO2 (g) and H2O (l) are produced and 2816 kJ of heat is liberated. Assume that the standard enthalpies of formation of CO2 (g) and H2O (l) are - 393 kJ/mol and -286 kJ mol respectively. (ii) Differentiate between path function and state function. (iii)Define adiabatic process.

26. (i) What is Boyle’s point? (ii) Why liquid drops are spherical in shape? (iii) Give Vander Waal’s equation of state for real gases? What is the significance of constants a and b in this equation? (iv)What is the effect of temperature on surface tension and viscosity of a liquid? (OR) 1+1+2+1 (i) What is meant by compressibility factor of gases? (ii) Write relation between density and pressure of a gas.

(iii) Critical temperature for CO2 is 30.98 oC. What does this mean? Explain other two

critical constants.

(iv)What are the two faulty assumptions of kinetic theory of gases?

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ATOMIC ENERGY CENTRAL SCHOOL No.4 RAWATBHATA

HALF YEARLY EXAMINATION 2016-2017

STD. XI Max. marks – 100

SUB:- MATHEMATICS TIME – 3 Hours

General Instruction :-

1. Question paper contains 29 questions.

2. Question 1-4 in section A are very short carrying 1 marks each.

3. Question 5-12 carry 2 marks each.

4. Question 13-23 are long answer type carrying 4 marks each.

5. Question 24-29 carries 6 marks each.

Section – A

1. If Y= { 1,2,3------10} and a represents any element of Y, write a set satisfying the condition aЄ Y and

a2 Y

2. Find a and b if = ( 0 , 6 + b)

3. If tan( A + B )= p and tan ( A – B) = q , then show that tan 2A =

4. If ( 1 + i)2 = x + iy , Find the value of x + y.

2 – i

Section – B

5. Solve the inequality _4 ≤ 3 ≤ _6_

x-1 x+1

6. If A = { 1,2,3,4} B = { 3,4,5,6} & C = { 1, 3, 5} then verify that A – ( B U C) = ( A -B) ∩ ( A- C)

7. Find the values of x for which the functions f(x) = 3x2 – 1 and g(x) = 3 + x are equal.

8. Find the range of the following functions

(i) f(x) = 1 - | x-2 | (ii) f(x) = 1+ 3cos2x

9. The minute hand of a watch is 1.5cm long. How far does its tip moves in 40 minutes.

10. Show that tan3xtan2xtanx = tan3x-tan2x- tanx

11. Find the value of z, if |z| = 4 and arg(z) = 5π

6

12. prove by induction 3n ˃ 2

n for all n Є N .

Section – C

13. Find si n , cos and tan if sinx= , x in quadrant II.

14. Prove by using the principle of induction for all n Є N

P(n) : 1.3 + 2.32 + 3.3

3 + ---------- + n.3

n = (2n – 1 ) 3

n+1 + 3

4

15. Find real θ such that 3 + 2isinθ is purely real.

1 -2isinθ

Or

If ( x+iy)3 = u + iv, then show that + = 4(x

2 – y

2)

16. The longest side of a triangle is twice the shortest side and the third side is 2cm longer than the shortest

side. If the perimeter of the triangle is more than 166 cm, find the minimum length of the shortest side.

17. Is f = { (1, 1), (2, 3), (3, 5) ,(4, 7)} a function ? Justify if this is described by the relation f(x) = ax +

b, then what values should be assigned to a & b.

18. Show that for any sets A and B (i) A = ( A ∩ B) U ( A – B) (ii) A U ( B – A) = A U

B

Or

If A, B and C be sets, then show that A∩( BUC) = (A∩B) U (A∩C)

19. Prove that 12+2

2+-----------+n

2 > n

3 , n Є N

3

20. If = 1 , then find the least positive integral value of m.

21. Solve sin2x – sin4x + sin6x = 0

22. Solve the inequality : (2x – 1) ≥ (3x – 2) - (2 – x)

3 4 5

23. Using venn diagram find whetheror not

A- ( B – C) = ( A – B) - C

24. Out of 100 students, 15 passed in English, 12 passed in Mathematics, 8 in Science, 6 in English and

Mathematics, 7 in Mathematics and Science, 4 in English and Science, 4 in all three. Find how many

passed

(i) in English & Mathematics but not in science (ii) in Mathematics only. (iii) in more than

one subject.

25. Convert the complex number z = _-16_ into polar form.

1 + i√3

26. prove by principle of induction :- 3n+2

– 8n – 9 is divisible by 8

Or 1.4.7 + 2.5.8 + --------------- + n(n+3)(n+6) = n (n+1) (n+6) (n+7)

4

27. (a) Convert 6 radians into degree measures.

(b) If sinx = 3 andcosy = -12 , where x & y both lie in second quadrant. Find the value of sin(x+y).

5 13

28. (a) Prove :- AX(B∩C) = (AXB)∩(AXC)

(b) Redefine the function :- f(x) = |x-2| +|2+x| , -3≤ x ≤3.

29. Show the following system of inequality graphically

3x + 2y ≤ 150, x + 4y ≤ 80, x ≤ 15 , y ≥ 0 , x ≥ 0

Or A manufacturer has 600 liters of a 12% solution of acid. How many liters of a 30% acid solution must be

added to it so that acid content in the resulting mixture will be more than 15% but less than 18%.

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ATOMIC ENERGY CENTRAL SCHOOL No 4 RAWATBHATA

Half -Yearly Examination (2016-17)

Subject – Biology

Time: 3Hrs Class – XI M.M.

70 General Instruction:-

1) There are total 26 questions and five sections in the Question paper. All questions are

compulsory.

2) Section A contains questions number 1 to 5, Very Short Answer Type Questions of one mark

each.

3) Section B contains questions number 6 to 10, Short Answer Type I Questions of two marks each.

4) Section C contains questions number 11 to 22, Short Answer Type II Questions of three marks

each.

5) Section D contains questions number 23, Value Based Question of four marks.

6) Section E contains questions number 24 to 26, Long Answer Type Questions of five marks each.

7) There is no overall choice in the question paper; however an internal choice has been provided

in one question of 2 marks, one question of 3 marks and all three questions of 5 marks. An

examinee is to attempt any one of the questions out of the two given in the question paper with

the same question number.

8) Wherever necessary, the diagrams drawn should be neat and properly labeled.

SECTION “A”

1. Who proposed the two kingdom classification who ogranised it in to five kingdom?

2. Which protozoan protiste is the casual agent of malaria?

3. Which vertebrate is marine but migrate for spawning to fresh water and die after few day of

spawning.

4. Who explained that cells are formed from pre existing cells?

5. One of the homopolysaccharide is also known as animal starch. Name it. SECTION “B”

6. (a) List the features that occurs during G1-phaseof cell cycle.

(b) Two key events take place during S-phase in animal cell, i.e. DNA replication and

duplication of centriole. In which parts of the cell do these events occur?

7. What are the characteristic of prokaryotic cells?

8. Differentiate between DNA and RNA.

9. (a) Distinguish between intracellular and extracellular digestion?

(b) How important is the presence of air bladder in Pisces?

10. Justify the statement Euglena is a taxonomic puzzle.

OR

How useful is the study of the nature of body cavity and coelom in the classification of

animals.

SECTION “C”

11. Name three groups of plants that bear archegonia. Briefly describe the life cycle of any one

of them.

12. Illustrate the taxonomical hierarchy with suitable examples of plant and animal.

13. Describe briefly the four major groups of Protozoa.

14. If you are given a specimen, what steps that you would follow to classify it?

15. Cell is the basic unit of life, Discuss in brief.

16. Can you describe what happens when milk is converted into curd or yoghurt, from your

understanding of proteins?

17. Describe the following:

(a) Synapsis (b) Bivalent (C) Chaismata

18. (a) Why the members of class- Deuteromycetes are considered the fungi imperfecti?

(b) Define the term Mycorrhiza. How the associations are affects a plant? Explain with

examples.

OR

Cynobateria and heterotrophic bacteria have been clubbed together in eubacteria of

Kingdom-Monera as per five kingdom classification even though the two are vastly

different from each other. Is this grouping of the two types of taxa in the same kingdom

justified? If so why?

19. (a) How does Cycas resemble bryophytes and pteridophytes?

(b)How triploid PEN (Primary Endosperm Nucleus) is formed? What is indicated by triploid

condition of endosperm?

20. List the main differences between a mitosis and meiosis.

21. Schematically represent primary, secondary and tertiary structures of protein.

22. What is a centromere? How does the position of centromere form the basis of classification

of chromosomes. Support your answer with a diagram showing the position of centromere

on different type of chromosomes.

SECTION “D”

23. Amrita and her mother planted small seedling of plant in the soil in their garden. After few

months, while playing with her friends Amrita observed that the seedlings which they

planted had grown into a mature and flourish plant. Amrita was curious to know this and

asked her mother about this.

(i) Name the process that causes growth in living organisms

(ii)Discuss about the process that how growth occurs in living organisms.

(iii) Analyse and write about the common sites of mitosis in plants as well as animals.

(iv) What value were shown by Amirita?

SECTION “E”

24. Name the two cell-organelles that are double membrane bounded. What are the

characteristic of these two organelles? State their functions and draw labeled diagram of any

one.

OR How do neutral solutions move across the plasma membrane? Can the polar molecules also

move across it in the same way? If not, then how are these transported across the

membrane?

25. Describe the general characteristic of Phylum Arthropoda . Write examples for economic

ally important insects, vector and living fossil.

OR

Mention the ploidy of the following:

Protonemal cell of a moss:; Primary endosperm nucleus in dicot, leaf cell of a fern; gemma

cell in Marchantia ; meristem of cell of monocot , ovum of liverwort, and zygote of a fern.

26. (a) Describe Life Cycle Patterns in plants with diagrammatic presentation.

(b) what is mesosome in prokaryotes cell? Mention the function that it performs.

OR

(a) Describe the important properties of enzymes.

(b) Why is mitosis called equational division?

------------------------------------

Atomic Energy Central School No-4, Rawatbhata Half Yearly Examination, 2016-17

Class: XI Computer Science Time allowed: 3 hours Maximum Marks: 70

Instructions:

i) All questions are compulsory. ii) Please check that this question paper contains 4 printed pages. iii) Please check that this question paper contains 5 questions. iv) Please write down the proper serial number of the question before attempting it.

Q.No.

1.

(a) Give the advantages and disadvantages of 3rd generation computers.

(b) Draw the block diagram of the digital computer system? Explain each of the working units, with examples?

(c) Write names of some inventions, who help in the design and development of the modern digital computers?

(d) Compare the hardware and software, give classification of software.

OR

Explain the strength and weakness of a computer system?

[2]

[6]

[2]

[3]

Q.No.

2.

(a) Write the following algebraic expression into C++ expressions: (i) Z = eX+XsinX

(ii) Z =√(XY+YX)

(b) Write the output for the following program code: (i) void main()

{

int a=5, b, c, d;

b= ++a * 2;

c= b-- + a++;

d= --c + --b;

cout<<a<<b<<c<<d;

}

(ii) if a=12; b=13 then what will be the value of following expressions:

(i) a && b || b && -2 || 0 (ii) a= (a>=b)? b+25 : b-5;

[2]

[2]

[2]

(c) Mark underlines for each error in the following program and also give explanation about the error occurs in the program.

include< iostream.h>

void main();

{ clrscr();

[2]

INT a,b, c;

cout<<”enter the values\n”;

cin>>a>>b;

c=sqrt(a+b);

cout<<”the result is: “<<c;

}

(e) Define the error(s) if any, in the following program and justify?

#include<iostream.h>

void main()

{ int a = 10;

b=a;

a= b+5;

cout<<a<<b;

}

(f) state output:

[i] 5 && -4 | | 0 | | -5

[ii] cout<<(15>=15) ? 15 + 5 : 15 – 5;

[2]

[2]

Q.No.

3.

Solve the following Questions using C++:

(a) Explain the tokens used in the C++, with examples.

(b) Explain the fundamental data types in C++?

(c) Write the syntax for initialization of Variable, with a suitable example.

OR

Explain the Conditional Operator with example?

(e) What is an expression? Give examples for arithmetic and logical expressions?

(f) What are shorthand assignment operators, give example?

(g) Define the following (any two)

i) relational operator ii) sizeof()

iii) << (o/p operator) iv) Precedence of Operators

[5]

[3]

[2]

[3]

[2]

[2]

Q.No.

4.

Write programs in C++ for the followings:

a) WAP to enter the basic salary of an employee and calculate the DA (56% of basic), HRA (35%), CTC (30%), PF(10%), IT(7.4%) and Net Salary, where Net Salray= Basic + DA + HRA + CTC – PF – IT, display all the details at output.

b) WAP to calculate area of a Triangle, by using Heron’s Formula.

OR

WAP to calculate the Compound Interest for the given Principal Amount, rate of interest and

[4]

[3]

time.

c) WAP to enter the sales made by the salesperson and calculate the commission of the salesperson, if the sales is >= 10000 then commission is 7.5% otherwise it is 5% of the sales.

d) WAP to enter five subject marks and calculate the total marks and percentage marks. Display all details at output in the following way:

__________________________________________________________________

ATOMIC ENERGY CENTRAL SCHOOL, No-04, RAWATBHATA

MarkSheet

________________________________________________________________

Roll no: 9 Name: XYZ Class: XI-A

Subject-1: English: 90

Subject-2: Physics: 90

Subject-3: Chemistry: 90

Subject-4: Maths: 90

Subject-5: Computer: 90

Total Marks Obtained: 450 Per% Marks: 90%

[3]

[5]

Q.No.

5.

(a) Which generation computer implements VLSI-IC Technology:

IInd Gen., IIIrd Gen., IVth Gen.

(b) Convert the following numbers into another base:

(i) (11.010)2 = ( ? )10

(ii) (1100.55)10 = ( ? )8

(iii) (CA7.9)16 = ( ? )2

(iv) (542.3)8 = ( ? )10

(c) Find the 2’s complements and 1’s complement for the following:

i) 10011011 ii) 111001011

(d) find the sign and magnitude form for the following numbers:

i) -54 ii) -26

[1]

[8]

[2]

[2]

ATOMIC ENERGY CENTRAL SCHOOL #4,RAWATBHATA HALF YEARLY EXAMINATION -2016

Time: 03 hrs Class XI, Physical Education MM: 70 Instructions:

Question paper consists of 26 questions. All questions are compulsory

1 marks questions must be answered in approximately 10-20 words.

3 marks questions must be answered in approximately 30-50 words.

5 marks questions must be answered in approximately 75-100 words. QUESTIONS 1. Define physical education. 1 2. Describe positive life style of an individual? 1 3. What do understand by hygiene? 1 4. What is yoga? Explain. 1 5. Draw & describe the Olympic symbol. 1 6. What do you understand by doping? 1 7. What is cause of diabetes? 1 8. Describe the Dronacharya Award. 1 9. What do you understand by depressants & stimulants? 1 10. What do we learn from YAMA, one of the elements of yoga? 1 11. Why do we practice DHARNA ? 1 12. How to prevent diabetes? 3 13. List various kinds of Kriyas . 3 14. Describe the procedure for the test for doping. 3 15. Describe in brief prevention of health threats by proper life style. 3 16. List various components of wellness. 3 17. Write down about any one of the developments took place after 1947. 3 18. Write down in detail about integrated physical education. 3 19. Explain the meaning of physical fitness giving suitable examples. 3 20. Write down in detail about any one of the careers in physical education.5 21. Write down various purposes of doping. 5 22. Describe the principles of adapted physical education. 5 23. List various sports awards along with the token , a recipient gets. 5 24. Describe various components of physical fitness. 5 25. Draw a labeled diagram of the court of your choice game. 5 26. Write down in detail about ancient Olympics. 5

-----------------------------

,4

2016 -2017

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