DAV Public SchoolSec-6 Dwarka New Delhi-110075

SA-1 AssignmentClass- VII

MATHEMATICS

MCQ

1. According to Pythagoras property, in a right-angled triangle, the square on the ______ = sum of the squares on the legs.

a. right angle b. altitude c. hypotenuse d. none of these

2. If the Pythagoras property holds for some triangle, will the triangle be

a. right-angled b. acute-angled c. obtuse-angled d. none of these 3. Write the vertex opposite to the side PR of ΔPQR.

a. P b. Q c. R d. none of these

4. Get the algebraic expressions using variables, constants and arithmetic operations. The number x multiplied by itself

a. 2x b. x + 2 c. x2 d. none of these 5. The fractional representation of 0.001% is

a.1100 b.

11000 c.

1100000 d. none of

these.

QUESTIONS

1. The three angles of a triangle are in the ratio 1:2:1. Find all the angles of the triangle. 2. The lengths of two sides of a triangle are 12 cm and 15 cm. Between what two measures should the length of the third side fall? 3. The two interior opposite angles of an exterior angle of a triangle are 60º and 80º. Find the measure of the exterior angle.

4. Is there a triangle whose sides have lengths 10.2 cm, 5.8 cm and 4.5 cm?

5. State whether a given pair of terms is of like or unlike terms.

a. 4m2p, 4mp2 b. 12xz, 12x2z2. 6. What should be subtracted from 2a + 8b + 10 to get – 3a + 7b + 16?7. Simplify: (5x – 2y) (5x + 2y).

8. If the area of the rectangle is 105 cm2. Its length is (4x – 5) cm and breadth is

(2x – 5)cm, find the perimeter?

9. Find the product of (2x +3y) (3x+2y).

10. In a city, 32500 are male and 17500 are female. Find the percent of male and female.

11. Mr Raman purchased a scooter for Rs 48000 and spent Rs 2000 for its insurance. After 3 months, he sold the scooter at Rs 45000. Find his profit or loss percent.

12. In what time will a sum of money double itself at 20 %n p.a.?

13. Find the next 3 equivalent rational numbers of −27.

14. Compare the following rational numbers

A.29, 611. B.

−49,− 310

15. Solve the following

A. 313

+ 739. B.95−

712

16. For x=47 and y=

−34, z=

214verify the following

A. x+y = y+x B. x+ (y +z) = (x+y) +z

C. x(y+z)=xy +xz D. (x - y )z= xz – yz

E. xy=yx F. z(xy) = (zx) y

17. Simplify the expression and write the answer in pq form

A. 1.27 +6.32-1.99 B.0.4 X 0.004 X 0.0050.1X 10 X 0.001

−12+ 15

18.The cost of a motor car depreciated from Rs 3,20,000 to Rs 2,80,000 in year 2014. What is the percent depreciation of the car for the year?

19. The exterior angle of a triangle whose interior opposite angles are equal, is 120. Find all the angles of the triangle. Also write the type of triangle it is.

20.Can we have a right angles isosceles triangle? If yes, what can be the possible measurements of the sides of the triangle?

HINDI

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ENGLISH

1. Read the article given below and answer the questions that follow:

“ Spotty Friendship”Vodadara : Two animals at Antoli village in Waghodia Taluka District have attracted the attention of everyone including wildlife activists.Honorary wildlife warden Rohit Vyas, who has visited the village several times said, “ A leopard has been visiting a cow at regular intervals since October last year. After the villagers told us about the

frequent visit of the leopard to the sugarcane field, our team visited the village to verify the story”. Vyas continued,” It was unbelievable, the leopard came close to the cow and the fearless cow licked the leopard on its head and neck”. Giving further details, Vyas added, ”The dogs bark non-stop every night between 9:30 p.m. and 10:30 p.m. when the leopard comes to meet the waiting cow”. The Forest Department, which was trying to capture the beast, gave up its efforts after learning about the friendship. Besides, the leopard did not harm other animals in the village . In fact, the residents welcomed the big cat. This was because other animals that could damage the crops fear the predator, so they stay away from the village. For now, wildlife officials are leaving the cat alone. A leopard can sometimes change its spots! A1. Tick the most appropriate answers: i) The report is about aa) strange friendship b) very common relationshipc) wildlife magazine d) cow and a leopard

ii) The leopard visited the village because ita) wanted to eat the crops.b) had made friends with a cow.c) had made friends with a dog.d) was scared of the wild life officials.

iii) Which phrase/sentence from the text shows that the villagers were happy to see the

leopard ?a) Villagers spotted a leopard regularly.b) The residents welcomed the big catc) Dogs would bark non stop.d) For now, wild life officials are leaving the cat alone.

A2. Answer briefly: i) Why do you think the dogs barked nonstop? ii) Did the villagers chase the leopard away? Give reasons for your answer? iii) Find words in the passage that mean the same as the following: i) Brave ii) continuously iii) very often

2. Read the passage carefully and answer the questions that follow: Have you ever wondered why children bite their nails so often? The child actually suffers from a habit disorder, putting him at a great risk of digestive tract diseases like intestinal worm infections. Biting nails leads to transportation of germs and bacteria that are buried under the surface of the nail into the mouth. Once the bacteria enter the stomach, they multiply causing various gastro-intestinal diseases.Habitual nail biting can lead to the protruding of the child’s front teeth, which results in caries, a common oral disease. But a compulsive nail biter also bites the surrounding skin, breaking the skin and transferring microbial and viral infections from the mouth onto the fingers. Long term nail biting can also interfere with normal nail growth and cause deformed nails.

According to a survey, people of all ages bite their nails. Children below the age of fifteen bite their nails at one time or another. Nail biting is most common among teens and is a common stress – relieving habit. Young adults also bite their nails. The survey has shown that one in five Indians is a victim of intestinal worm infection caused by nail biting. The nail is a cartilage and eating it does not cause a serious threat as it is not a foreign body. The problem lies with the bacteria that live on the nail bed. In children it is mostly dirt which gets deposited due to improper hygiene. The bacteria go back into the body and multiply resulting in worms. Most people bite nails while reading, watching television and talking on the phone. Children bite their nails when they are having problems at school or with friends. As it does not bother others, it is not considered a mental disorder. Some self management strategies are like reward and punishment and keeping hands busy while studying,playing or watching television. Even schools have started appointing counsellors to address this problem. Parents have been asked to teach children ways to cope with the habit rather than punishing them by putting chilly powder and paste on their nails.

A1.. Complete the following: a) Biting nails can put a child at a greater risk of ____________________.b) It harms child’s front teeth as it results in ____________________________.c) Long term nail-biting can interfere _______________________.d) The nail is a cartilage and eating it _______________________.e) Most people bite nails while _____________________________.

3. Read the following poem carefully: SILVER

Slowly, silently, now the moonWalks the night in her silver shoon;

This way , and that, she peers, and seesSilver fruit upon silver trees;

One by one the casements catchHer beams beneath the silvery thatch;

Couched in his kennel like a log;With paws of silver sleeps the dog;

From their shadowy cote the white breasts peepOf doves in a silver feathered sleep;

A harvest mouse goes scampering by ;With silver claws and silver eye;

And moveless fish in the water gleam;By silver reeds in a silver stream.

Choose the correct options given below:1 The moon walksa) speedily c) in the skyb) slowly and silently d) beautifully

2 The silver-feathered creature mentioned in the above poem isa) dove c) sparrowb) crow . d) crane

3) The poet compares dog with aa) thatch c) logb) wall d) stick

4) The mouse isa) sleeping c) jumpingb) running d) hopping

5) Under the effect of moon light , water becomesa) silvery c) blueb) golden d) green 4. Read the following poem carefully:

Polar Bear The polar bear never makes his bed; He sleeps on a cake of ice instead. He has no blanket , no quilt, no sheet Except the rain and snow falling together. He drifts about on a white ice floe While cold winds howl and windstorm blow

And the temperature drops to forty below. The polar bear never makes his bed;

The blanket he pulls over his head Is lined with soft and feathery snow. If ever he rose and turned on the light , He would find a world of bathtub white, And icebergs floating through the night. Choose the correct options given below:1. The polar bear sleepsa) In a big hole c) on treesb) On ice d) on land 2. The polar bear’s body is adapted toa) extreme heat c) extreme coldb) extreme damp weather d) extreme dry weather

3. The blanket that he pulls over his head is made up ofa) wool c) cottonb) leather d) snow

4. Which of the following statements of the polar bear is not correct?a) He makes his own bed b) He always faces rain and snow falling togetherc) He is whited) He feels comfortable in the home of ice

5. The word ‘floe’ meansa) a field of floating ice c) heavy rain

b) snow and rain d) strange

6. Your class is going to Chandigarh and Pinjore on one day trip. Write a notice inviting names of the students who wish to join the trip. Give details about the contribution and the details of the trip.

7. Write a letter to your younger brother, who is fond of taking junk food, warning him about the effects of such food . You are Karan, staying at 42 ,Sector 17, Chandigarh (120 words)

8. Write a letter to your friend sharing with her the details of your experience in the new school. You are Julika, staying at 25, Sarat Bose Lane , Chandan Nagar, West Bengal.

9. You are Nidhi/Rishabh a student of class VII. Write a speech in about 120 words on the topic ‘Bond of Grandparents’ to be given In the morning assembly.

10.On the basis of ideas gathered from the unit “Attitude”. Draft a speech in about 120 words on ‘The steps to become a successful person in life’ to be given in the morning assembly.

11.Read the following telephonic conversation between your father and the principal of your school.Your father is to leave for the office. Draft the message, he would write in not more than 50 words.

Principal : Can I speak to Kamal,please?Father : Kamal is not at home at the moment..Principal : Can I leave a message for him ?Father : Oh sure.Principal : Please inform him that he has submitted the admission

form without his signature. Tell him to come to my office immediately and sign the form.

Father : I will inform him, thank you.

12. Write an E-mail to your friend, congratulating him on winning a scholarship to study abroad.( 50 Words)

13. Your school recently organized a Blood Donation Camp. Write an E-mail to your friend describing your experience.

14. The following has not been edited.There is an error in each line against which a blank is given. Write the error and the correction in your answer sheet:-

Correction Error The word computer come a) ---------- -------from the word compute who b) ---------- -------- means to calculate.In a dictionary, a word c) --------- --------computer is described in a d) --------- -------

device , usual electronic, who e) -------- -------performs according by a set of instructions. f) --------- -------- 14. Rearrange the following words to form meaningful sentences a) picnic/ Sunday/ a/ on/went/ last/ we b) a/ is/ lake/ there/ our/ city/ near c) a/ boat after/ we/that/ went/ for// joy-ride/ in/ d) saw/ in / the/ water/ we/ many / beautiful /fishes e) a/ day/ an/ keeps/ apple/ away/ doctor/the 15. Look at the notes given below. Then use the information to complete the paragraph by writing suitable words or phrases in each space. Do not add any new information.

doctors test donor’s blood to check for disease and infection - the nurse ties a device-round his upper arm- she cleans the skin- inserts needle- blood flows and collects in a bottle. The donor’s blood _____ by the doctors. They make sure that he is not infected. The donor lies down and a device _________ . His skin ____________ and a needle _________ . Blood begins to flow and ________ in a bottle.

16. Fill in the blanks with the correct form of the verbs given in brackets: At 7’o clock in the morning , I (a) ______ (go) to gym. I (b) _______(exercise) for one hour when my trainer will start meditation class. After that I (c) ________(have) my breakfast. Then I will go for a movie. My movie ticket (d) _______(delivered) by Friday. After watching the movie, I (e) _______(do) lunch at my favourite restaurant. Then I (f) ________(go) for shopping. I (g) _______(come) back home before my cousin’s arrival. I(h) _________(have) fun for full day after a long time. 17. Fill in the blanks ‘a’, ’an’ or ‘the’ whichever is suitable. If no article is required put a ‘X’ in the space provided:

1) Everyday father goes to ______work by ______car. On the way he buys -_____apple and ____orange which he has during ______lunch break. He is on ______ strict diet these days.

2) He is ______officer in _____ministry of foreign affairs. He is posted in _____United Kingdom. He is _______youngest officer there.

18. Complete the letter with suitable linkers :

My dear FatherIt has been a long time(a) _______ I wrote to you. My examination are over (b)

________ you will be glad to know that I have stood second in my class. Papa, (c) ______

our winter break is coming , our school is organizing an educational tour to Mumbai. (d) _______ our Maths teacher ________ Science teacher will

accompany on this tour. It is going to be 15 days tour and we will visit (e) ________ Mumbai __________ Mathura. The school will decide the cost of trip (f) ________ they would know the number of students interested in the tour. I will go (g) _______ you will give me permission. I sincerely hope you will allow me (h) _______ I can enjoy this opportunity of school tour.

(a) (i) when (b) (i) but (c) (i) as (d) (i) both-and (e) (i) not only-but also (ii) since (ii) so (ii) since (ii) such-that (ii) either-or

(iii) after (iii) and (iii) that (iii) neither-nor (iii) but-also (iv) only (iv) yet (iv) unless (iv) either-or (iv) both-and

(f) (i) after (g) (i) if (h) (i) no(ii) yet (ii) so (ii) or(iii) when (iii) unless (iii) that(iv) because (iv) so that (iv) so that

19. Change the voice of the following sentences:a) Children liked toys.b) He has stolen our books..c) The teacher was calling the rolls.d) I can do this work.e) He has completed his home task.

20. Fill in the blanks with suitable determinersLast month, we went to see (a) _________ National Book Fair with our teacher. We bo (b)_________ books. (c) ________ of them were story books. While (d)________ others were of General Knowledge. I also bought (e) _________ books which had (f)_________ of quizzes.

21. Read the following extracts and answer the questions that follow: 1. ‘O Birdie ,Birdie,will you pet? Diamond-stones and amber and jet.

a) Name the poem and the poetb) What does the poet mean by the term ‘amber’?c) Why does the child want to offer various comforts to the bird?

22. I dream a world where all Will know sweet freedom’s way Where greed no longer saps the soul Nor avarice blights our day.

a) Name the poem and the poetb) What does the phrase ‘where greed no longer saps the soul’ mean?c) Name the rhyme scheme.

23. ‘Mother, please ,’ interrupted the girl, her dark eyes burning. ‘Don’t….’

a) Who said these words to whom? b) Why did the girl interrupt her mother? c) What did the girl’s mother advice her?

24. ‘ Ah , but Tutu isn’t a boy.’ ‘ This is a little girl monkey’.

a) Who said these words and to whom? b) Why did the grandmother want a little girl in the house? c) Who was to prove the grandmother wrong? d) Name the lesson and author of this story? 25. ‘ Can running water be drunk from gold? Can, a silver dish the forest hold? A rocking twig is the finest chair, And the softest paths lie through the air- Good-bye, good-bye to my lady fair!’

a) Name the poem and the poet?b) What does the bird refuse as gifts from the child?c) What according to the little girl is the finest chair?d) Name the rhyme scheme in the above stanza.

26. A frightful proposition, Swami thought. ‘We’ll see about it later,’ Father cut in. a) What was the frightful proposition? b) What had made father give such a frightful proposition? c) Why did Swami change the subject? 27. ‘ What a brave boy ‘ she thought. ‘He didn’t give up. He played on , despite

what other people Said. Perhaps her mother was right. She had to fight, fight on like Rich Belanger.’

a) Who was Manjula Parelkar in this story?b) What was her handicap?c) Who was Rich Belanger?d) How was he an inspiration for Manjula?e) What was Manjula planning to participate in?

28. I dream a world where man No other will scorn Where love will bless the earth And peace its path adorn.

a) What kind of world does the poet dream?b) What will the earth be blessed with?c) Name the poetic device in the line ”Love will bless the earth.”d) Name the poem and the poet in the above given line s.

29. Write a diary entry as Swami on his feelings and experiences in the office room at night.30.. Write a diary entry as Manjula Parelkar expressing her thoughts about how physically challenged people did not need sympathy, but only encouragement. 31. Answer the questions briefly: (a) How was Grandmother convinced to keep Tutu as a pet? (b) Why does the bird refuse to accept the various comforts offered by the child (c) How did Swami catch the burglar? (d) Why did Manjula tear her paintings into pieces? (e) What according to you is the dream world of the poet?

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SCIENCE

1. Why are the animals and humans called heterotrophs?2. Why are insectivorous plants called partially heterotrophs?3. How is the association between fungi and algae beneficial to each other?4. In which part of the human body absorption takes place?5. Name the hardest substance in our body.6. Where is the caecum located in the body of the ruminants? Mention its role.7. Explain the various steps involved in the process of nutrition.8. Differentiate between elements and compounds giving examples each.9. What does a chemical equation represent?

10. What are ions? Write the symbol for ammonium and acetate ions.11. Which acid is called the ‘king of chemicals’ and why?12. What is the difference between bases and alkalies.13. How do acids and bases react with each other? Give example.14. Write a chemical equation for: hydrochloric acid reacts with sodium hydroxide.15. The soil of an agricultural field has become too basic. What will you add to correct it?16. Which property of mercury makes it suitable for its use in thermometers?17. How are the land breeze and sea breeze produced? Draw diagrams to illustrate.18. What are stomata? Where are these generally found? Write its functions.19. State the differences between clinical and laboratory thermometer.20. Which property of a solid is employed when it is used for making the handle of a pressure

cooker?21. Which form of matter does not transfer heat by convention?22. Why do woolen clothes keep us warm when it is cold outside?23. Why are the pipes of solar heater and the containers of solar cookers painted black?24. Name the two parameters required to know how fast an object is moving.25. A girl takes 15 minutes from her house to reach her school on her cycle. If the speed of the

cycle is 2 m/s, calculate the distance between her house and the school.26. Name the quantity measured by an odometer and speedometer.27. Define least count.28. Define average speed. What are its units? 29. What is meant by uniform motion? Plot a distance against time graph to represent this type

of motion.30. When can an event be termed as ‘periodic’? Give an example.31. Define respiration. Differentiate between aerobic and anaerobic respiration. 32. How is oxygen transported from lungs to other parts of the body?33. Why do cooking utensils have plastic handles?34. Why do athletes often get muscle cramps?35. What is the difference between breathing and respiration?36. What changes occur in the chest cavity and lungs during inhalation?37. Describe briefly the respiratory organs of cockroach, fish and earthworm.38. Why should we breathe through nose and not through the mouth?39. Name the zones in which the climate of India is divided. Explain them briefly.40. How do climate and weather differ from each other?41. What kind of food is taken in by most tropical rainforest animals?42. How do penguins protect themselves from cold?43. Name the factors on which the climate of a place depends.44. Mention three adaptations in elephants.45. How is weather forecasting done by measuring atmospheric pressure?46. Which adaptations make the birds fly?47. Mention two human activities that influence the climate of a place.48. In which forms, water exists on earth?49. List the causes of groundwater depletion.50. What is the main function of rain water harvesting?51. Suggest the ways to minimize the wastage of water at individual level.52. Why is the ocean/sea water not fit for domestic use?53. Why does a potted plant die when overwatered?54. What are lichens? Write the functions of each of its components.

55. Differentiate between organic and mineral acids.

SOCIAL SCIENCE

I Choose the correct option

1) Which is the example of Physical environment?

a) Computer b) Chair c) Water d) Building

2) In which language Ain- e – Akbari is written?

a) Sanskrit b) Arabic c) Persian d) Turkish

3) Which of the following is a Literacy Programme is initiated by government of India?

a) Operation Black Board b) Adult Education c) Universal Elementary Education d) All of the above

4) An organized group having its own policies and programmes.

a) Constitution b) Preamble c) Political Party d) Coalition Government

5) Rusting of iron railings is an example of

a) Weathering b) Erosion c) Deposition d) Denudation

6) Name the ruler who issued bronze token currency.

a) Ala ud din Khalji b) Ibrahim lodi c) Feroz Shah Tughlaq d) Muhammad bin Tughlaq

7) Who among the following was a well known music composer, outstanding poet and a great historian of Sultanate period?

a) Ziauddin Barani b) Amir Khusro c) Razia Sultan d) Ghiyasuddin Balban

8) Name the softest substance found in nature.

a) Diamond b) Graphite c) Iron d) Coal

9) The thin solid layer covering the outside of the earth is called

a) Crust b) Mantle c) Core d) None of the above10) Which one of the following is not a union territory?

a) Chandigarh b) Delhi c) Goa d) Pondicherry.

II Answer the following questions briefly.

1) Draw a diagram of four spheres of environment and explain the hydrosphere briefly.

2) Define the following terms

a) Secularism

b) Coalition government

3) Mention the three important developments that took place after the disintegration of Rastrakutas, Palas and Pratiharas?

4) Distinguish between the following -:

a) Transported soil & Residual soilb) Continental glacier & Mountain glacier

5) Why did Daulat Khan the Governor of Punjab invite Babur to India?

6) Name any three states of India which have bicameral legislatures.

7) Explain the main well known literary sources of information for the medieval period?

8) How is Metamorphic rocks formed? Give example.

9) Enumerate any three reasons responsible for the defeat of Indian rulers.

10) Mention any three powers of the governor of states in India.

III) Answer the following questions in detail.

1) Suggest ways in which we can live in harmony with our surroundings and stop the exploitation of the environment.

2) Why have the benefits of reservation not reached to weaker sections of the society equally? Suggest any two steps that can ensure the development of all the sections of the society?

3) Explain the different layers of soil with the help of a diagram.

4) Draw a well labeled diagram of interior of the earth and write one feature of each of the following.

a) Crustb) Mantlec) Core

5) Explain briefly the economic reforms of Ala – ud – din Khalji?

6) Mention five functions of council of ministers of a state.

7) Mention important features of political social and economic condition during the rule of Palas and Rastrakutas.

8) Why is conservation of soil important? Suggest different ways of soil conservation.

9) Describe the three projects initiated by Muhammad bin Tughlaq and also explain the causes of their failure.

10) Enumerate the factors that create inequalities and hamper the success of democracy.

IV) On the political map of India mark the following places.

a) Any one state having alluvial soil

b) Extent of Pratihara dynasty.

c) Kanauj

d) River Narmada