NOTE: Homework of all subjects should be submitted on

28th June,2018 to the class teacher in their respective classes

between 8:30am to 10:00am

ENGLISH

1. Develop a story in 200 – 250 words using the following beginning. Also give it a suitable title.

a. ‘As I reached home, I realized that I had forgotten the keys. There was still an hour for my brother to

turn up. So, I decided to go to the terrace…...’

b. ‘A little boy named Salim on his way back from school found a puppy crying on the road and so

brought it home. He did not want to tell his father about it because his father did not…...’

2. a) Failure and success are part of life. Failure show us our weakness and help us to achieve success by

conquering them. Write an article on ‘Failure is a Stepping stone’ in 150-200 words. You are

Girish/Garima.

b) We cannot imagine life without our mobile phones, TV sets and other modern gadgets. Write an

article on ‘Role of Modern Gadgets’ in 150-200 words. You are Rashi/Rishi

3. Write a paragraph in about 150-200 words on the following topics.

a) Role of Media

b) Living as a teenager in my country

c) Are Optimism and Success are interconnected?

d) Each One Teach One

e) Status of Women in Society

f) An exciting journey on NASA

g) India Emerging as Major Centre for Cyber Crime’

h) The Relevance of Newspaper

i) Life in Britain/USA/Australia/Northern Ireland (All English speaking countries)

j) Aping of Western Culture by the Young Generation.

4. a) You recently visited the 24th Crafts Mela at Suraj Kund, Faridabad. It was mini India assembled at

one place. Make a diary entry of what you saw and experienced there.

b) While going home you come across many children on the roads begging bowls in their hands. You

are shocked and disgusted at this unflattering picture of a country which boasts of being a major

economy in the world. Record experience in your diary. (150-200 words)

5. Read the following Novels and write a book review on any one.

a) Angels and Demons by Dan Brown

b) The Lord of the Rings by J.R.R.Tolkien

c) The Outsider by S.E.Hinton

d) The Old Man and the Sea by Earnest Hemingway

e) Jane Eyre by Charlotte Bronte

6. Attempt a self-composed poem on any two of the following topic.

a) Hope

b) Nature

c) Friendship

d) Family

e) life

Note: Do all the questions on A4 size sheets and put them in a folder

MATHS

Do the questions on A4 size sheet and submit in a folder

ASSIGNMENT

1 Mark Questions

1. If 8x+1=64, what is the value of 3 2x+1?

2. Which of the following is irrational ?

(i) 0.14 (ii) 0.1416 (iii) 0.1416 (iv) 0.1014001400014….

3. Which of the following is rational?

(i) 3 (ii) (iii) 4/0 (iv) 0/4

4. √2 is a polynomial of degree?

(i) 1 (ii) 2 (iii) 0 (iv) 3

5. Every rational number is a

(i) natural number (ii) real number (iii) integer (iv) whole number

2 Marks Questions

6. Let x and y be rational and irrational numbers, respectively. Is x + y necessarily an irrational number?

Give an example in support of your answer.

7. Let x be rational and y be irrational. Is xy necessarily irrational? Justify your answer an example.

8. Locate √13 on the number line.

9. Simplify the following: (i) √45 – 3 √20 + 4 √5 (ii) √124

x √76

(iii) 4 √28 ÷ 3√ 7 ÷ √7 (iv) 3√ 3+ 2 √27 + 7/√3 (v) √814

– 8 √2163

+ 15 √325

+ √225

10. Classify the following polynomials as polynomials in one variable, two variables etc.

(i) x2 + x + 1 (ii) y3 – 5y (iii) xy + yz + zx (iv) x2 – 2xy + y2+ 1

11. If p(x) = x2 – 4x + 3, evaluate : p(2) – p(–1) + p(1/2)

12. Find the remainder when x3 – ax2 + 6x – a is divided by x-a.

13. Use factor theorem to determine that x-3 is factor of x3-4x2+x +6

14. Insert 10 rational numbers between -3/11 and 8/11

15. Express each in p/q form:

a) 0.123,bar is on 3 b) 0.76 ,bar on 76 c) 1.25, bar on 25 d) 20.25 ,bar on 25

16. Find the value of k if x-3 is a factor of k2x3 – kx2 + 3kx – k

17. Find the dimensions of a cuboid if its volume is 3x3 – 12x

18. Evaluate (i) (30)3 +(20)3 –(50)3 (ii) (-12)3 + (7)3 +(5)3

19. For what value of x + y in Fig. 6.4 will, ABC be a line? Justify your answer.

20. Can a triangle have all angles less than60°? Give reason for your answer.

21. In Fig.2, find the value of x for which the lines l and m are parallel

Fig.2

22. Is it possible to construct a triangle with lengths of its sides as 9 cm, 7 cm and 17 cm? Give reason for

your answer.

23. Is it possible to construct a triangle with lengths of its sides as 8 cm, 7 cm and 4 cm? Give reason for

your answer.

24. In Fig. 7.7, l || m and M is the mid-point of a line segment AB. Show that M is also the mid-point of any

line segment CD, having its end points on l and m, respectively.

25. Bisectors of the angles B and C of an isosceles triangle with AB = AC intersect each other at O. BO is

produced to a point M. Prove that MOC = ABC

3 Marks Questions

26. Simplify the following expressions: (3 marks each)

a) (√3 +√7)2 b) (√5 -√3)2 c) (2√5 + 3√2)2

27. Rationalise the denominator in each of the following and hence evaluate by taking √2 =1.414,

√ 3 =1.732,and √5 = 2.236 upto three places of decimal.

(i) 4/√3 (ii) 6/√6 (iii) (√10 - √5)/2 (iv) √2/(2+√2) (v) 1/(√3- √2) (3 marks each)

28. Write in expanded form: (3 marks each)

a) (2x + 3y)3 b) (3x-2y)3 c) (7a+5b)3 d) (4a – b + 2c)2

e) (3a – 5b – c)2 f) (– x + 2y – 3z)2

29. If 2x +3y = 13 and xy = 6,find the value of 8x3 + 27y3

30. Evaluate: a) (1002)3 b) (999)3 c) (598)3 (3 marks each)

31. Factorise : (3 marks each)

(i) 2x3 – 3x2 – 17x + 30 (ii) 25x2 + 16y2 + 4z2 – 40xy + 16yz – 20xz (iii) 1 – 64a3 – 12a + 48a2

32. Find the following products: (3 marks each)

(i) (x+y+2z)(x2 + y2+4z2-xy -2yz -2zx)

(ii) (2x-y+3z)(4x2+y2+9z2+2xy+3yz-6xz)

33. Factorise : a) 4√3x2 + 5x-2√3 b) 5√5x2+30x+8√5 (3 marks each)

34. Factorise : a) p3-512q3 b)2√2a3 +8b3 -27c3 + 18abc (3 marks each)

35. Find the remainder when f(x) = x3 -6x2 +2x -4 is divided by g(x)=1-3x

36. Prove that if in two triangles two angles and the included side of one triangle are equal to two angles

and the included side of the other triangle, then the two triangles are congruent.

37. P is a point on the bisector of angle ABC. If the line through P, parallel to BA meet BC at Q, prove that

BPQ is an isosceles triangle.

38. ABCD is a quadrilateral in which AB = BC and AD = CD. Show that BD bisects both the angles ABC

and ADC.

39. ABC is a right triangle with AB = AC. Bisector of angleA meets BC at D. Prove that BC = 2 AD.

40. O is a point in the interior of a square ABCD such that OAB is an equilateral triangle. Show that OCD

is an isosceles triangle.

4 Marks Questions

41. If x = 3 + √ 8, find x2 + (1/x2)

42. Solve [ (√5 – 2)/( √5 + 2)] – [( √5 + 2) / (√5 -2)]

43. Factorise a7 – ab6

44. Simplify : (4 marks each)

(i) [1/ (1+ 2)] + [1/ ( 2+3)] + [1/ ( 3+ 4)] + [1/ ( 4+ 5)]

(ii) 4+ 5 + 4- 5

4- 5 4+ 5

45. If (x + 5) is a factor of x3 + 2x2 – 13x + 10,find other factors.

46. Rationalise (4 marks each)

(i) [4 / (2 + √3 + √7) ] (ii) [(3 2 – 23) / (32 + 2 3)] + [12 / (3 - 2)]

47. Without finding the cubes, factorise (x – 2y)3 + (2y – 3z)3 + (3z – x)3

48. Factorise (i)4a2 – 9b2 – 2a – 3b (ii) a2 – b2 -2(ab –ac + bc) (4 marks each)

49. Without actual division , prove that 2x4 – 6x3 + 3x2 + 3x – 2 is exactly divisible by x2 – 3x +2

50. Two lines l and m intersect at the point O and P is a point on a line n passing through the point O such

that P is equidistant from l and m. Prove that n is the bisector of the angle formed by l and m.

SCIENCE

(PHYSICS)

I. Using basic concepts of physics, Making either a working or non- working model on any renewable

resources of energy.

II. Plan to go to a place by a vehicle. Take readings of odometer and speedometer after every 5

minutes till you reach your destination. Record these observations in tabular form; plot

graphs between distance-time and speed time. State whether this motion is uniform or non-uniform.

III. Answer the following questions:

1. What is the acceleration of a body moving with uniform velocity?

2. What does the slope of a distance-time graph gives?

3. Can displacement be zero even when distance is not zero? Give Example.

4. How can you get speed of an object from its distance – time graph?

5. How can you get distance of an object from its speed – time graph?

6. Can a body have zero velocity and still acceleration? Give example.

7. Is it possible in straight line motion a particle having zero speed and a non-zero velocity? Explain.

8. On a 80 km straight road, a bus travels the first 40 km with a uniform speed of 30 kmh-1. How fast must

the bus travel the next 40 km so as to have average speed of 40 kmh-1 for the entire trip?

9. A driver takes 0.30 seconds to apply the brakes. If he is driving car at a speed of 72 kmh-1 and the brakes

cause a deceleration of 5.0 ms-2. Find the distance travelled by the car after he sees the need to put the

brakes.

10. A ball thrown vertically upwards with a speed of 29.4 ms-1 from the top of a tower returns to the earth in 8

seconds. Find the height of the tower. (g = 9.8 ms-2)

11. A bullet initially moving with a velocity of 30m/s strikes a target and comes to rest after penetrating a

distance of 0.02m in the target. Calculate the retardation produced by the target.

12. A body moving in a straight line at 108kmph undergoes an acceleration of 5m/s2. Find its speed after 5

seconds.

13. A car a moving at rate of 90km/h and applies brakes which provide a retardation of 6ms-2.

(i) How much time does the car takes to stop.

(ii) How much distance does the car cover before coming to rest?

(iii) What would be the stopping distance needed if speed of the car is doubled?

14. A body starts from rest and moves with a uniform acceleration of 4m/s2 for 6s and then it moves with a

constant velocity for 5s. Later it slows down and comes to rest in 8s. Draw the velocity- time graph for the

motion of the body and answer the following questions:

a. What is the maximum velocity attained by the body?

b. What is the distance travelled during this period of acceleration?

c. What is distance travelled when the body was moving with constant velocity?

d. What is the retardation of the body while slowing down?

e. What is the distance travelled by retarding?

f. What is the total distance travelled?

CHEMISTRY

1. Fill in the blanks:

a) The physical state of water at 25 ֯C is ____________.

b) Increase in temperature leads to _________ in kinetic energy of the molecules of a substance.

c) The two ways to liquefy a gas are ___________ and ___________ .

d) The ability of a substance to resist change in its shape is called as ___________.

e) Phase change from gas directly to solid is termed as ___________.

2. Water΄s boiling point is 100 ֯C. Can it be made to boil at 95 ֯C or 105 ֯C?

3. Which has more density: one kilogram of cotton or one kilogram of iron? Why?

4. Do all liquids miscible/immiscible diffuse into one another?

5. Is it correct to say that matter is continuous in nature? Explain.

6. Differentiate between boiling and evaporation.

7. Explain: Acetone gives more cooling effect to our palm as compared to water when both are applied on

palm.

8. You are provided with a mixture of naphthalene and sodium chloride by your teacher. Suggest an

activity to separate them with a well labeled diagram.

9. Pressure and temperature determine the state of matter. Comment.

10. Explain the various factors on which evaporation depends.

11. It is a hot summer day, Priya and Rohit are wearing cotton and nylon clothes respectively. Who do you

think would be more comfortable and why?

12. Comment: Sponge though compressible is a solid.

13. Conversion of solid state to liquid state is called fusion. What is meant by latent heat of fusion?

14. Amina was making tea in a kettle. Suddenly she felt immense heat from the puff of steam gushing out of

the spout of kettle. She wondered whether the temperature of the steam was higher than that of the water

boiling in the kettle. Comment.

15. For any substance, why does the temperature remain constant during the change of state?

BIOLOGY

1. Given below is a diagram of a cell. Study it carefully and then answer the following questions:

a) Give suitable title to the given figure.

b) What is the term used for the genetic material which lies in the cytoplasm and not covered by

any envelope?

c) Name the only cell organelle present in this cell which is not membrane bound.

2. Name the lenses used in a compound microscope. What is the magnification power of a compound

microscope?

3. Give at least two important characteristics of a prokaryotic cell.

4. What is diffusion? What is its significance?

5. What will be the fate of RBCs when placed in a hypertonic solution?

6. Draw a well labeled structure of nucleus showing nuclear pores, nucleoplasm, nucleoid, nuclear

membranes.

7. What is plasmolysis and turgidity? Explain.

8. Name the two semi-autonomous cell organelles. Why are they called so?

9. Differentiate between:

a) Prokaryotes and Eukaryotes

b) Animal and Plant cell

c) Unicellular and Multicellular organisms

10. What is cell theory? Name the scientists involved.

11. Give the structure and function of Smooth Endoplasmic Reticulum and Rough Endoplasmic Reticulum.

What is their role in membrane biogenesis?

12. Why does the plant cell, placed in a hypotonic solution, not burst?

13. Lysosomes are the suicide bags of a cell. Comment.

14. Draw a neat diagram of plant cell and label any three parts which differentiate it from an animal cell.

15. State two types of plastids. Write one function of each.

SOCIAL SCIENCE

1. Prepare a project on Disaster Management

Following Topics can be taken:-

a) Components of disaster Management

b) Specific Hazards & Mitigation

c) Earthquake

d) Landslides

e) Floods

f) Cyclones

g) Drought

h) Fires

i) Road, Rail & Air Traffic Accidents

j) Terrorist attacks, Chemical & Industrial Accidents

k) Epidemics

PREPARATION AND SUBMISSION OF PROJECT REPORT

Following essentials are required to be fulfilled for its preparation and submission:

• The total length of the project report will be 15 – 20 pages.

• The project report will be hand written and credit will be awarded to original drawings,

• Illustrations and creative use of materials.

• The project report will be presented in a neatly bound simple folder.

• The project report will be developed in this sequence.

• Cover page showing project title, student information, school and year

• List of contents

• Acknowledgements and preface (acknowledging the institution, offices and libraries visited and

persons who have helped)

• Introduction

• Chapters with suitable headings.

• Planning and activities to be done during the project, if any.

• Conclusions (summary and suggestions or findings, future scope of study)

• Bibliography

• All the maps, photographs and sketches should be labelled and related to the theme.

• Appendix (if needed)

• Teacher’s report

2. Do the assignments given below on A-4 ruled sheet.

3. Map Practice:

Geography:

a) Physical Map- The Himalayas (mountain ranges), Plateaus, Plains, Desert, Coastal Plains.

b) River Map- Himalayan and Peninsular rivers

c) Political Map- Fresh and Salt water Lake

History:

Mark the following places on the outline map of France:

* Download the map of France from Google map

a) Regions not affected by the Great fear

b) Area of agrarian revolt early 1789

c) Epicenter of main panic movements

d) The spread of the Great fear

e) Ports from where slaves were transported

f) The place where storming of the Bastille took place

ASSIGNMENT (SOCIAL SCIENCE)

HISTORY CH-1: THE FRENCH REVOLUTION

Answer the following questions in 60-80 words:

1. The French Revolution popularized many symbols. Each symbol depicted some basic

values . Mention the symbols and related values.

2. Describe the significance of “The tennis court oath” in French revolution.

3. How did peasants protest against the feudal lords or nobles of France?

4. The burden of economic activities of the state through taxes was borne by the third estate alone. Explain.

HOTS:

a. In” The spirit of the laws” Montesquieu proposed a division of power within the government between the

legislative, the executive and the judiciary. Explain the values which can be reflected in this period.

b. French Revolution is the milestone in World history. Justify this statement.

GEOGRAPHY CH-1 INDIA: SIZE AND LOCATION

Answer the following questions in 60-80 words:

1. India accounts for about 2.4 % of the total geographical area of the world but

supports the second largest population of the World. What are its implications?

2. Opening of Suez Canal has benefited India immensely. How?

3. Why the cities of Mumbai and Chennai are able to see the noon sun exactly overhead

twice a year but Delhi never sees it exactly overhead? Explain.

4. The latitudinal and longitudinal extent of India is 30 degree but north- south extent is

bigger than east-west extent. Explain

HOTS:

a. “India is an ancient country, it has contributed many things to the World and in return

got many things”. Give examples to justify this statement.

b. What routes of trade replaced the “Silk route” in modern time?

CIVICS CH-2: WHAT IS DEMOCRACY? WHY DEMOCRACY ?

Answer the following questions in 60-80 words:

1. Democracy is of the people, for the people and by the people. Explain how the people

are rules in a democracy.

2. Democracy is all about political competition and power play. There is no scope for morality. Justify this

statement.

3. Rulers and the ruled both are responsible for making an ideal democracy. Give your

own views.

4. Even holding regular elections, popularity of the leaders fail to provide a guarantee for

democracy. Explain with examples.

HOTS:

a. It is said that democracy is not an ideal form of Government. How should democracy be

Improved to make it an ideal form of government?

b. Democracy is based on consultation and discussion. Explain this statement.

c. Even though economic condition of China and India was almost the same during the period 1958-61 China

faced severe famine while India didn’t. What do economists think about this?

d. Although the principle of Universal Adult franchise has now cone to be accepted almost

all over the world there are many instances of denial of equal right to vote. Explain with

examples.

ECONOMICS CH-1: THE STORY OF PALAMPUR

Answer the following questions in 60-80 words:

1. Green Revolution is associated with loss of soil fertility. In this context mention

five problems caused by modern farming.

2. Explain the difficulties faced by small farmers due to lack of capital.

3. What could be the scope for landless and small farmers to make their vulnerable life well in

villages? Suggest some ways in this direction.

HOTS:

a) “ For every farm activity there is a need of the factors of production”. How do you agree

Or disagree with this statement.

b) Why modern farming methods increase production cost at the same time harming the

physical environment?

Do the above assignments on A-4 size ruled sheets.

HINDI

(1) Me ’n’ Mine(निम्ननिखित अभ्यास कार्य पुस्तक में ही करिा है |)

• अपनित गद्ाांश - पृष्ठ संख्या -24 से 28 • वर्य नवचे्छद - पृष्ठ संख्या - 56 से 58 • अिुस्वार,अिुिानसक - पृष्ठ संख्या – 62 • िुक्ता - पृष्ठ संख्या – 65

(2) समाचार पत्र में नदए नहांदी के कोई 20 अिुिेर् नवज्ञापिो ां का सांग्रह करके एक पांनिका तैर्ार कीनिए|

(3) निम्ननिखित नवषर्ो ां पर अिुचे्छद निखिए –(व्याकरर् रनिस्टर में करिा है |) • अधिकार ंकी महत्ता • अधिस्मरणीय यात्रा िृतांत • अधतधि देि भिः

SANSKRIT

पाठ 1 -3 में से अव्यय शब् ंक छांट कर एक ताधिका बनाओ । ग्रीष्मािकाश में आप जहां भी घूमने गये हैं , उनके पांच धचत्र अभ्यास पुस्तिका में धचपका कर उनका िणणन कर । एक धचत्र का िणणन िगभग दस िाक् ंमें करना हैं ि मंजूषा भी स्वरधचत ह नी चाधहए। पाठ 2 - 3 में से स्वर , वं्यजन ि धिसगण सस्ति के उदाहरण ंक छांट कर एक ताधिका बनाओ । ग्रीष्मािकाश में अपनी धनयधमत धदनचयाण का िणणन संसृ्कत भाषा में करते हुए प्रधतधदन दस िाक् धिस्तिए । इदम् , तत् , धकम् , अस्मद् ि युष्मद् इन सिणनाम शब् ंके रूप अच्छी प्रकार से कंठस्ि करके अभ्यास पुस्तिका में धििें ।(तीन ंधिंग )