MODERN SCHOOL, VAISHALI

CLASS - VIII HOMEWORK

ENGLISH

Last year, my Mum, Dad and I _____ (go) on holiday to England. On the last day, I

_____ (tell) them: ‘I am going to be English today’. My parents just ______ (laugh). At

breakfast, I ______ (order) bacon, sausage, egg and beans. Later that morning, we _____ (visit) a

café. There was only us in there, but I _____ (make) Mum and Dad line up in a queue. We ____

(order) a pot of tea and we _______ (drink) it with milk. Next, we

______(feed) the ducks in the park. On the way, a girl _______ (bump) into me.

‘Sorry luv!’ she ________ (exclaim). ‘Sorry, luv!’ I _______ (reply), even though

it wasn’t my fault. ‘Lovely weather, by the way, isn’t it?’ I ______ (add). ‘It is

for the moment,’ the girl ________ (answer), ‘but it’s going to rain later.’

Then, we _____ (go) into town and we ______ (look) at the charity

shops. Dad ______ (drive) us back to the hotel and we ______ (get) stuck in traffic

for ages.

When we _____ (get) back, I ______ (draw) a picture of a dog. Dad ______

(compliment) me on what a good picture it was.’ Oh it’s really awful’, I _____ (say). Then I

_______ (take) my ‘dog’ for a walk round the hotel.

In the evening, I _______ (suggest) fish and chips for supper, but my Dad _______ (not fancy)

that, he _______ (fancy) a curry. He ______ (tell) us there’s nothing more English than chicken

tikka massala!’

‘Right-oh dad,’ I ______ (agree) ‘And then let’s go to the pub afterwards.’

‘Go to the pub after the curry? No, no, no Alessandra! That’s not English. First, the pub and then

the curry!’ Oops, I _______ (forget), my dad used to be a student in England and he knows a bit

about the English!

By Alessandra, aged 15, from Italy. Put the verbs into the past simple tense

Answer the questions in full sentences.

1) Where did the family go on holiday?

2) What did Alessandra decide she was going to do

on the last day?

3) How did her parents react to her idea?

4) What did she choose for breakfast?

5) What did she make her parents do at the café?

6) What did they drink?

7) Why did they do at the park?

8) What happened on the way to the park?

9) Who apologised first?

10) Why did Alessandra apologise?

11) What did Alessandra and the girl chat about?

12) What did the family do in town?

13) What held them up on the journey back to the

hotel?

14) Did Alessandra take a real dog for a walk?

15) What did Alessandra want for supper?

16) Who disagreed and what did he fancy?

17) How come Alessandra’s dad ‘knows how to be

English’?

Here are the things Alessandra believes to be typically English:

A) They have big cooked breakfasts with bacon and sausage.

B) They queue up.

C) They drink tea, always with milk, never lemon.

D) They apologise for everything, even when not at fault.

E) They talk about the weather all the time.

F) They are modest and self-effacing – they do not accept compliments very well.

G) The town centres are full of charity shops and that’s where the Brits like to shop.

H) Traffic! Everywhere! It’s awful.

I) They love their pets, usually cats or dogs.

J) Popular takeaways are fish ‘n’ chips and curry.

K) They go to pubs.

L) In many parts of the country, they call each other, even strangers, ‘luv’.

TASK: What are some typical customs in your country? Is there any stereotypical behaviour? How do

people greet each other? What are popular foods? Write some sentences about it.

Answer TRUE or FALSE. Write Tor F on the line

1. __ Alessandra is Italian.

2. __ She went to England with her friends.

3. __ She had a full English for breakfast.

4. __ They formed a queue at the café.

5. __ They drank tea with lemon.

6. __ They went to a park to feed the ducks.

7. __ Alessandra accidentally bumped into a boy.

8. __ Both the girl and Alessandra apologised.

9. __ They mentioned the weather.

10. __ In town, they shopped in the big department

stores.

11. __ She sketched a dog.

12. __ Alessandra accepted her dad’s compliment

gracefully.

13. __ They ate fish and chips.

14. __ Alessandra said they should go to the pub

before having a curry.

15. __ Her dad did not agree with going to the pub.

16. __ Alessandra’s dad used to teach in England and

so he knows a bit about being English.

GRAMMAR

Complete the sentences by putting the verbs in brackets into the correct tense

1. My sister usually ……………(work) as an engineer but at the moment she ………… (study) for an

extra qualification.

2. Can you hear the birds? They ………………….. (sing) in the trees.

3. Your grandmother ………………….. (live) in a cottage in Ireland. She ………………. (live) there all her

life.

4. Marina always ………….(arrive) late on Fridays because she very often ……. (miss) the train.

5. Barbara ………….. (be) taller than her brother Ulises.

6. There was a fire at my friend’s house so he ……………. (stay) at a hotel until the damage is

repaired.

7. I’m Spanish. I ……………….. (be) born in Cordoba. It……………. (be) a beautiful city.

8. I think smoking is unhealthy so now I ……………… (try) to give up.

9. Look! That young woman ……………… (jump) on the bus.

10. Statistics show that the Dutch ………………….. (be) the tallest race.

11. 50% of British families ………………. (keep) pets at home.

12- Henry …………….. (use) my bike while his car is being repaired.

13- Our teacher is ill today so we ……………. (have) a day off at school.

14. Sheila is in hospital for a month, she ……………. (recover) from an operation.

15. I usually …………. (like) eating, but tonight I ………….. (not enjoy) the food at all.

16. Everyone in our family …………………. (have) blond hair and blue eyes.

17. Hurry up! We …………………. (not can) miss the bus this morning.

18. The man ………………. (pay) the bill at the counter and ………….. (run) to his car.

19. Sonia ……………… (park) the car and ……………. (enter) the police station yesterday.

LITERATURE

A. Explain these lines with reference to the context to the lesson ‘Toasted English’:

1. In America, they have freed the language from the stifling tyranny of the passive voice.

a. What does the writer mean by ‘the stifling tyranny of the passive voice’?

b. How have the Americans freed the language? Give an example of freedom of American English from the passive voice.

2. What do you mean by standing there gaping at the world while you block everybody’s passage?

Stand aside, man!

a. What does the speaker convey through the line given above?

b. What does RK Narayan say about British English?

3. ‘O.K.’ or okay is another well-known example. It is the easiest sound that ever emanated from the human vocal chords.

a. In what context is the example of okay given? How is it the easiest sound?

b. What is the tone of the speaker?

4. The time has come for us to consider seriously the question of a Bharat brand of English.

a. Why has the time come to consider the question of Bharat brand of English?

b. What kind is the Bharat brand of English?

B. On seeing the daffodils, the speaker forgets his loneliness and enjoys a moment of bliss. Why?

C. Write a paragraph describing one of the scenes given below. (100-120 words)

1. Sunset behind the sea waves

2. A lazy Sunday afternoon

Adjectives to Describe Character

1) Match the words 1-10 to the definitions a-j

1. affectionate a) keeps his feelings hidden

2. ambitious b) working hard and careful to do things well

3. bossy c) thinking about the feelings and needs of other people

4. clumsy d) is determined to do what he wants and refuses to do anything else

5. conscientious e) very concerned with unimportant details and is difficult to please

6. considerate f) showing that you love or care about someone / something

7. fussy g) is determined to be successful

8. reliable h) able to be trusted, predictable and dependable

9. reserved i) is awkward in movement and manner

10. stubborn j) always telling people what to do, in a way that annoys them

2) Complete the sentences using an appropriate adjective from exercise 1).

1. He is a ____________________________person and has a strong sense of responsibility.

2. He is so___________________________ that he can’t even push the small cart ahead.

3. I cannot cope with that boy; he is so ____________________________________.

4. Mary has always been ________________________about her personal appearance.

5. She is an _____________________________________ child and loves to be hugged and kissed.

6. You never know what John is thinking or feeling, he is so ______________________________.

7. Mrs. Freeman is terribly __________________________ and nobody likes her much.

8. Women tend to be more_________________________________ than men at wearing a seatbelt.

9. Ann’s parents were intensely ____________________________for her and her younger sister.

10. She is always polite and ____________________________________ towards her employees. 3) Complete the sentences with the adjective form of the words in brackets.

1. Both wanted to control, and both were _____________________in their own decisions. (confidence)

2. Watching violence on TV makes some children more __________________________. (aggression)

3. This is a____________________________and inventive piece of film-making. (courage)

4. From a_____________________________point of view, it isn't a good place to live. (practice)

5. Personally, I think he is____________________, but many people trust him. (honesty)

6. It was___________________________of Jeremy to offer to pay for us both. (generosity)

7. The loss resulting from _______________________________ work is very serious. (care)

8. We thought she was______________________, whereas in fact she was just very shy. (arrogance)

9. Mr. Peterson has never really been the ______________________type. (sociability)

10. His__________________________ remarks hurt and she reacted accordingly. (sense)

HINDI

नोट:---- सभी प्रश्न अधिन्यास कााँपी मे करे।

1. सूययकाांत धिपाठी की कधिता को धिि सधित धिजाइनर शीट पर धिधिए।

2. पता िगाइए कक िाि भारत के ककन-ककन राज्यो मे पाया जाता ि ैऔर

उसस ेकौन-कौन सी िस्तुएाँ बनाई जाती िैं।

3. “भारत के गााँि” पर अनुच्छेद धिधिए।

4. कोरोना से बिन ेके उपाय बताते हुए अपनी सिी को पि धिधिए।

5. धनम्नधिधित प्रश्नो के उत्तर दीधजए।

(1) श्री कृष्ण न ेमृत्यु के बारे मे ककस प्रकार समझाया ?

(2) शरीर और आत्मा मे क्या अांतर ि ै?

(3) सांसार मे रिते हुए मनुष्य का अधिकार कमय पर ि ैया कमयफि पर?

और क्यो?

(4) धस्िर बुधि िािे मनषु्य के क्या ि्षणण ि?ै

(5) मनुष्य का पतन कैस ेिोता ि?ै

6. धनम्नधिधित गद्ाांश को पढ कर प्रश्नो के उत्तर दीधजए ।

गीता के इस उपदशे की िोग प्राय: ििाय करते ि ैकक कमय करे,फि की इच्छा न करे। यि किना तो सरि ि ैपर पािन

उतना सरि निी। कमय के मागय पर आनांदपूियक ििता हुआ उत्सािी मनुष्य यकद अांधतम फि तक न भी पहुाँि ेतो भी

उसकी दशा कमय न करने िािो की अपे्षणा अधिकतर अिस्िाओ मे अच्छी रिगेी,क्योकक एक तो कमय करते हुए उसका

जो जीिन बीता िि सांतोष या आांनद मे बीता, उसके उपराांत फि की अप्राधि पर भी उसे यि पछ्तािा न रिा कक

मैंने प्रयत्न निी ककया। फि पििे से कोई बना-बनाया पदािय निी िोता। अनुकूि प्रयत्न-कमय के अनुसार.उसके एक-एक

अांग की योजना िोती ि।ै ककसी मनुष्य के घर का कोई प्राणी बीमार ि।ै िि िैद्ो के यिााँ से जब तक औषधि िा-िाकर

रोगी को दतेा जाता ि ैतब तक उसके धित्त मे जो सांतोष रिता ि,ै प्रत्येक नए उपिार के साि जो आांनद का उन्मेष

िोता रिता ि-ैयि उसे कदाधप ना प्राि िोता, यकद िि रोता हुआ बैठा रिता। प्रयत्न की अिस्िा मे उसके जीिन का

धजतना अांश सांतोष,आशा और उत्साि मे बीता,अप्रयत्न की दशा मे उतना िी अांश केिि शोक और दिु मे कटता।

इसकेअधतररक्त रोगी के न अच्छे िोने की दशा मे भी िि आत्म-ग्िाधन के उस कठोर शोक और दिु: स े बिा रिगेा जो

उसे जीिन भर यि सोि-सोि कर िोता कक मैंन ेपूरा प्रयत्न निी ककया।

(क) िोग गीता के प्राय: ककस उपदशे की ििाय करते ि?ै

(ि) इस गद्ाांश मे कमय के बारे मे क्या किा गया ि?ै

(ग) प्रयत्न और अप्रयत्न की अिस्िा मे क्या अांतर िोता ि?ै

(घ) क्या फि पििे से बना बनाया पदािय िोता ि?ैक्यो? रोगी व्यककत को कब आांनद

प्राि िोता ि?ै

(ि) “आत्म-ग्िाधन” शब्द का अिय स्पष्ट कीधजए।

7. धनम्नधिधित शब्दो के धिए एकाधिक शब्द दीधजए ।

1. बांजर

2. समसामधयक

3. धिश्वसनीय

4. बििाधगन

5. धनराकार

8. धनम्न के दो-दो पयाययिािी धििो।

पाियती, सेिक, कौशि, तरांग, ककरण

MATHEMATICS

1. Write three rational numbers occurring between 1/3 and 4/5. 2. Multiply the negative of 2/3 by the inverse of 9/7. 3. What should be added to -16/3 to make it 1/9? 4. What should be subtracted from 5/8 to make it -1? 5. Write different properties of a rational number. 6. Represent 3/4 and 8/9 on a number line. 7. Find the greater of the two -12/5 and 4/9 8. Multiply the negative of 29/2 by its inverse. 9. Write a rational number equivalent to 9/10 having 90 as numerator. 10. Write a rational number equivalent to 18/29 having 87 as denominator. 11. Write 2/3, -4/9, -8/11 in ascending order.

12. Write 2/3, -4/9, -8/11 in descending order. 13. Fill in the blanks:

(i). The product of a number and its reciprocal is _________. (ii). The rational number _________ has no reciprocal. (iii). The reciprocal of the reciprocal of a number is _________. (iv). The rational number _________ is neither positive nor negative. (v). __________ is the only rational number which is equal its additive inverse.

14. Write:

(i) A rational number which has no reciprocal. (ii) A rational number whose product with a given rational number is equal to the given rational number. (iii) A rational number which is equal to its reciprocal.

15. Verify that:

(i) and are there same

(ii)

16. Find:

17. Find:

18. Find three rational number between and

19. Find five rational numbers between and

20. Find 10 rational numbers between and

21. The product of two rational numbers is If one of them is then find the other:

EXPONENT AND POWER

1. THE VALUE OF 20 + 30

2. SIMPLIFY [ ( 2 )-1 + ( 4 )

-1 + ( 3 )

-1 ]

3. FIND X SO THAT ( -3 )X +1 X (-3 )5 = (-3 )7

4. MASS OF MARS IS 6.42 X 1029 KG AND THE MASS OF THE SUN IS 1.99 X 1030KG . WHAT IS THE TOTAL

MASS ?

5. EXPRESS IN POWER NOTATION ( A ) 125 ( B ) 81 / 625

6. A BOY IS ASKED TO WRITE 25 X 92 BUT HE WROTE 2592 . THE NUMERIC DIFFERENCE BETWEEN THE

TWO IS .

7. FIND THE RECIPROCAL OF ( -2/ 3 )4 X ( -3 /4 )3.

8. WHICH IS GREATER 43 OR 34.

9. FIND THE VALUE OF ( 5X )3 WHEN X = - 2/ 5.

10. FIND THE VALUE OF 40.

11. FIND THE VALUE OF ( 90- 70) X ( 9 + 7 ).

12. SIMPLIFY : ( 24 X 25 ) ÷ ( 22 X 23 ).

13. IF 3X = 27 THEN 3X-2.

14. IF 4X = 256 , THEN FIND THEVALUE OF 62X – 8.

15. WRITE IN SCIENTIFIC NOTATION: A ) 72000 B) 8 0000000

16. SIMPLIFY: 25 𝑋 92

82×35

17. THE EARTH HAS 1.353 X 109 CUBIC KM OF SEA WATER . EXPRESS IN STANDARD FORM.

18. simplify: 25 𝑋 34 ×16

32 𝑋 64

19. FIND THE VALUE OF X IN : ( 4 /5 )8 X ( 4 /5 )7 = ( 4 /5 ) 2X-1

20. FIND THE VALUE OF X IN ( -3 )X-1 = -243.

21. EXPRESS THE FOLLOWING NUMBERS IN STANDARED FORM :

A) 3.52 X 10-5 B) 7.54 X 10-6

22. EXPRESS IN STANDARD FORM :

A) 1 MICRON IS EQUAL TO 1

10000000 M.

B) CHARGE ON ELECTRON IS 0.000000000000000000016 COULOMB.

C) SIZE OF A PLANT CELL IS 0.00000045 M

D) THICKNESS OF A THICK PAPER IS 0.07 MM.

E) DISTANCE BETWEEN SUN AND EARTH IS 1. 496 X 1011.

23. IN A STACK THERE ARE 5 BOOKS EACH OF THICKNESS 20 MM AND 5 PAPER SHEETS EACH OF

THICKNESS 0.016 MM . WHAT IS THE TOTAL THICKNESS OF THE STACK.

24. SIMPLIFY : 3−5X 10-5 X 125

5-7X 6-5

25. EVALUATE : FIND THE VALUE OF M : ( -3 )m + 1 X ( -3 ) 5 = ( -3 )7

SQUARE AND SQUARE ROOT

1. Which of the following numbers is a perfect square? (a) 141 (b) 196 (c) 124 (d) 222

2. A perfect square number can never have the digit ...... at the units place. (a) 1 (b) 4 (c) 8 (d) 9 3. Which of the following is a Pythagorean triplet? (a) (2, 3, 5) (b) (5, 7, 9) (c) (6, 9, 11) (d) ((8, 15, 17)

4. Sum of the first n odd natural numbers is: (a) 2n + 1 (b) n² (c) n² - 1 (d) 2n² + 1

5. √5625 = ? (a) 55 b) 65 (c) 75 (d) 85 6. What least number must be added to 6072 to make it a perfect square? (a) 6 b) 10 c) 12 (d) 16

7. √0.9 = ? (a) 0.3 (b) 0.03 (c) 0.33 (d) 0.94

8. √0.00059049 is equal to (a) 0.243 (b) 0.0243 (c) 0.00243 (d) 0.000243

9. √1.0816 = ? (a) 1.04 (b) 1.286 (c) 0.904 (d) 1.35

10. √0.9 × √1.6 = ? (a) 0.12 (b) 1.2 c) 0.75 (d) 12

1. How many numbers lie between squares of the following numbers?

(i) 12 and 13 (ii) 25 and 26 (iii) 99 and 100

2. Write a Pythagorean triplet whose one member is:

(i) 6 (ii) 14 (iii) 16 (iv) 18

3. (n+1)2-n2 = ?

4. Show that 121 is the sum of 11 odd natural numbers.

5. Show that the sum of two consecutive natural numbers is 132. 6. Use the identity and find the square of 189?

(a – b)2 = a2 – 2ab + b2

7. What would be the square root of 625 using the identity (a +b)2 = a2 + b2 + 2ab?

8. Find the square roots of 100 and 169 by the method of repeated subtraction.

9. Find the square root of 729 using factorization method.

10. Find the smallest whole number by which 1008 should be multiplied so as to get a perfect square number. Also, find the square root of the square number so obtained.

11. Find the smallest whole number by which 2800 should be divided so as to get a perfect square.

12. 2025 plants are to be planted in a garden in such a way that each row contains as many plants as the number of rows. Find the number of rows and the number of plants in each row.

13. Find the smallest square number that is divisible by each of the numbers 8, 15 and 20.

14. Find the square root of 7921 using long division method∴

15. Find the square root of 42.25 using long division method.

16. Find the least number which must be added to 1750 so as to get a perfect square. Also, find the square root of the obtained number

17. In a right triangle ABC, ∠B = 90°. a. If AB = 6 cm, BC = 8 cm, find AC b. If AC = 13 cm, BC = 5 cm, find AB.

18. Find the length of the side of a square whose area is 441 m2.

19. There are 500 children in a school. For a P.T. drill, they have to stand in such a manner that the number of rows is equal to the number of columns. How many children would be left out in this

arrangement?

20. A gardener has 1000 plants. He wants to plant these in such a way that the number of rows and the number of columns remain the same. Find the minimum number of plants he needs more for this.

21. Express 49 as the sum of 7 odd numbers.

MENSURATION AND DIRECT VARIATION

1. If 7 kg sugar cost is Rs 70 then What is the cost of 5 kg sugar .

2. Find the area of a rhombus whose diagonals are 8 cm and 15 cm.

3. A machine in a soft drink factory fills 1120 bottles in 7 hours. How many bottles will it fill in 6 hours.

4. If 3 men or 4 women can earn Rs 480 in a day, find how much will 6 men and 11 women earn in a day.

5. The floor of a building consists of 3000 tiles which are rhombus shaped and each of its diagonals are

45 cm and 30 cm in length. Find the cost of polishing the floor at the rate of rs4 per m2.

6. Mohan wants to buy a trapezium shaped field .its side along the river is parallel to and twice the side

along the road. if the area of this field is 10500m2 and perpendicular distance between two parallel side

is 100m, find the length of the side along the river.

7. The area of trapezium shaped field is 480 m2, the distance between two parallel sides is 15 m

and one of the parallel side is 20 m. find the other parallel side.

8. Top surface of a raised platform is in the shape of a regular octagon as shown in the figure. Find the

area of octagonal surface.4cm

5cm

11 cm

9. Diagram of the adjacent picture form has outer dimensions = 24 cm x 28 cm and inner dimension 16

cm x 20 cm. find the area of each section of the frame if the width of each section is same.

10. Mohan wants to buy a trapezium shaped field. Its side along the river is parallel to and twice the side

along the road. If the area of this field is 10500 m2and the perpendicular distance between the two

parallel sides is 100m, find the length of the side along the river.

11. Find the area of a rhombus whose side is 5cm and altitude is 4.8 cm. if one of its diagonals is 8cm

long, find the length of other diagonal.

12. The cost of 5 m of a particular quality of cloth is Rs 210. Calculate the cost of 2 , 4 , 10 and 13 metres

of cloth of same type .

13. An electric pole, 14 metres high, cast a shadow of 10 m. find the height of a tree that cast a shadow

of 15 m under similar conditions.

14 observe the following tables and find if x and y are directly proportional.

x 20 17 14 11 8 5 2

y 40 34 28 22 16 10 4

15. If the weight of 12 sheets of thick paper is 40 grams, how many sheets of the same paper would

weigh 2 1

2 kilogram.

16. The scale of a map is given as 1:30000000. Two cities are 4cm apart on the map. Find the actual

distance between them.

17. A train is moving at a uniform speed of 75km / hr.

a) How far will it travel in 20 minutes?

b) Find the time required to cover a distance of 250 km

18. The shape of the surface of a table is trapezium. Find its area if its parallel sides are 1m and 1.2 m

and perpendicular distance between them is 0.8 m.

19. Find the area of the polygon MNOPQ if an = , MP = 8 cm, mc = 6cm, MB =4cm

MA = 3cm, OC = 3cm, QB = 2.5 cm.

n o

m a b c p

q

20. The area of a trapezium is 34 cm2 and the length of the parallel sides is 10 cm and its height is 4 cm.

find the length of the other parallel side.

SOCIAL SCIENCE

1. Study the “Revolt of 1857” and make a project.

Focus should be laid upon the following;

(a) Causes of revolt

(b) Outbreak of the revolt

(c) Why the revolt failed?

(d) Result of the revolt.

2. Make a project on' Changes in Art and Architecture under the colonial rule’:-

(a) Art, Painting, literature, Theatre, Music, Dance etc.

(b) Architecture Grand structures made by British, commercial center, monuments etc.

This is to be done in a project file, also paste Pictures relevant to the topic and make it in a

presentable form.

3. Write paragraph on Disaster management.

* Make it in a Project file and paste Pictures relevant to the topic

* Presentation should be neat.

SUBJECT--SCIENCE—

ASSIGNEMENT-1

C—3 SYNTHEIC FIBRES AND PLASTICS

Answer the following questions-in one word

1. Polyester is a long chain polymer of a chemical substance called ____

2. What is the name of regenerated synthetic fiber? 3. What is the name of first fully synthetic fiber 4. Give an example of natural polmer 5. What is the full form of PVC? 6. Acrylic fibers are advantageous over?

7. Nylon is made from ____? 8. The polymers in which smaller units are linked to each other in straight arrangement are called as _______? 9. Name the plastic which cannot be softened once molded into a shape? 10. Name the plastic used for making insulation cover of electrical wires? 11. Rayon clothes are comfortable to wear in ____?

12. The first fully synthetic fiber was ___ 13. The non stick coating on pans and other cooking utensils is made from ______? Question: Fill in the blanks with correct word- a. ______ fibers are less expensive than natural fibers. b. Synthetic fibers are not good absorbers of _______ . c. In______ weather clothes made of synthetic fiber stick to the body. d. Synthetic fibers catch fire easily so they are _______ . e. Clothes made of synthetic fibers should not be worn in ______

Question: Fill in the blanks :- a. ______ burns vigorously and leaves little ash. b. ______ burns slowly with the smell of burning hair. c. ______ shrinks on burning producing black smoke. d. ______ burns readily with the smell of burning paper. e. ______ shrinks if burnt and forms a black bead a long with sooty flame.

Question: Fill in the blanks :- a. Rayon is prepared from ______ . b. Polythene is prepared from______ . c. Nylon is prepared from simple chemicals obtained from ______ . d. Polyester is made from ______ products. e. ______ is called a regenerated fiber.

Choose the correct option in the following questions:

01. What is the other name for artificial silk? (a) Nylon (b) Rayon (c) Acrylic (d) Polyester

02. Which fiber is used as artificial wool? (a) Acrylic (b) Rayon (c) Nylon (d) Cotton

03. Polymers are made up of small units called _____ (a) layers (b) molecules (c) cells (d) monomers

04. The strongest synthetic fiber is ______ (a) nylon (b) rayon (c) polyester (d) acrylic

05. Wood pulp is used to make ______ (a) plastic (b) wool (c) jute (d) rayon

06. Which of the following is a natural fiber? (a) Wool (b) Nylon (c) PVC (d) Polythene

07. Melamine is ______ (a) thermoplastic polymer (b) thermosetting polymer (c) fibre (d) elastomer

08. Fiber produced in factories is called ______ (a) man-made fibre (b) natural fibre (c) synthetic fibre (d) both (a) and (c)

09. PET is a ______ (a) polyester (b) polyamide (c) nylon (d) thermosetting polymer

10. Which of the following cannot be recycled? (a) Toys (b) Cooker handles (c) Carry bags (d) Plastic chair

11. Synthetic fibers synthesized from raw materials are called _____ (a) jute (b) rayon (c) petrochemicals (d) Bakelite

12. Bakelite is an example of _____ (a) fibre (b) elastomer (c) nylon (d) thermosetting polymer

13. Which term is used for polymers made up of a large number of glucose units? (a) Protein (b) Fructose (c) Cellulose (d) Polyester

14. Which of the following is non-biodegradable? (a) Paper (b) Cotton cloth (c) Wood (d) Plaatic

Multiple Choice Questions

Question 1: Which force is being applied by a vendor when he is pushing the pushcart?

a. Muscular force

b. Magnetic force

c. Friction

a.d. Electrostatic force

Question 2: What will happen to the speed of a car when the driver applies brakes?

a. Speed increases

b. Speed decreases

c. No change in speed

d. Change in direction

Question 3: Which force always opposes motion?

a. Magnetic force

b. Electrostatic force

c. Friction

d. Muscular force

Question 4: When your friend pushes your bike from behind, what will happen to the

speed of the bike?

a. Speed decreases

b. Speed increases

c. No change

d. Any of the above

Question 5: Which of the following possess gravitation?

a. Earth

b. Venus

c. Saturn

d. All of the above

Question 6: How much weight of air is always over your head?

a. 1000 kg

b. 100 kg

c. 10 kg

d. 1 kg

Question 7: Which force causes a charged balloon to attract another balloon?

a. Muscular force

b. Electrostatic force

c. Magnetic force

d. Gravitational force

Question 8: A dropper to fill ink works because of which of the following?

a. Friction

b. Magnetic force

c. Air pressure

a.d. Electrostatic force

Question 9: What is the SI unit of force?

a. Newton

b. Galileo

c. Einstein

d. Faraday

Question 10: Which animal can easily walk in desert?

a. Lion

b. Zebra

c. Giraffe

d. Camel

Very Short Answer Type Questions

Q 1: What is force? Write its unit?

Q2 What are effects of force ?explain with examples

Q3 What is the difference between balanced force and unbalanced force

Q 4: What is a contact force?and name its types and define them with examples

Q 5: What is a non-contact force and name its type and define with examples

Q 6 What is pressure? What is theS.I unit of pressure

Q7 why is a sharp knife more effective in cutting a fruit than blunt knife?

Q8 Why camel is able to walk on sand easily?

Q9 why are high rise building are kept wide?

Q10 Name two parameter which define pressure?

Q11what is atmospheric pressure?

Q13 How does atomspheric pressure change with altitude?

Q14 Why all cutting instrument have sharp edges?

Q15 why does mountaineers at high altitude experience bledding in nose why?