DELHI PUBLIC SCHOOL SAIL Township, Ranchi

Summer Holiday Assignment (2016-17)

Class:-X Subject:- English

I. Change the following sentences from Direct to Indirect. (1x10=10)

1. He will say, “ I have to go to school today.”

2. He said to his mother, “I was reading this book.”

3. The teacher said, “Students you did your work, didn‟t you?”

4. The minister said, “Let us make our country a better place to live in.”

5. The man said “ Go and board the train.”

6. The gardener said, “Did I plant the trees properly ?”

7. The friend said,” When do you expect the result to be declared?”

8. The little swallow said, “ Good night! Prince.”

9. The old man said “ Bravo! We did it at last.”

10. The boy said to his father, “I shall go to the market today.”

II. Complete the story in about 150-200 words with the help of the given beginning. 10

It was a pleasantly quiet day while I was watching T.V My mom was in the

kitchen preparing breakfast. I suddenly heard my sister, Rita scream loudly,

“Oh! My puppy Bruno!...................

III. The nightingale does not like the frog’s criticism when he says ‘That’s not much to boast

about?’ Imagine she answers back, ‘Who are you to judge my song?’

Now write the conversation between the frog and the nightingale in the context of the above

reply in 120-150 words.

IV. Read the following poem carefully and answer the questions that follow.

A Poison Tree

I was angry with my friends:

I told my wrath, My wrath did end.

I was angry with my foe:

I told it not, my wrath did grow.

And I watered it in fears

Night and Morning with my tears

And I sunned it with smiles.

And with soft deceitful wiles.

And it grew both day and night.

Till it bore an apple bright.

And my foe beheld it shine.

And he knew that it was mine

And into my garden stole

When the night had veiled the pole.

In the morning glad I see

My foe outstretched beneath the tree.

William Blake.

Answer the following questions in short

(a) What does the word ‘Poison’ metaphorically represent?

(b) Which aspect of the poet is being reflected in the second stanza?

(c) Explain line 14.

Answer the following question in detail.

(a) Discuss the theme of the poem.

(b) What parallel has been drawn between an apple and the poet’s behavior towards his

foe?

DELHI PUBLIC SCHOOL SAIL Township, Ranchi

Summer Holiday Assignment (2016-17)

Class:-X Subject:- Mathematics

1. Express 140 as a product of its prime factors.

2. Find the LCM and HCF of 12, 15, and 21 by the prime factorization method.

3. Find the LCM and HCF of 6 and 20 by the prime factorization method.

4. State whether 13/3125 will have terminating decimal expansion or a non-terminating repeating

decimal.

5. State whether 17/8will have a terminating decimal expansion or a non-terminating repeating

decimal.

6. Find the LCM and HCF of 26and 91 and verify that LCM x HCM= product of the two numbers.

7. Use Euclid‟s division algorithm to find the HCF of 135 and 225

8. Use Euclid‟s division lemma to show that the square of any positive integer is either of the form

3m or 3m +1 for some integer m

9. Prove that 3 is irrational.

10. Show that 5- 3 is irrational.

11. Show that any positive odd integer is of the form 6q +1, or 6q+3, or 6q+5, where q is some

integer.

12. An army contingent of 616 members is to march behind an army band of 32 members in a

parade. The two groups are to march in the same number of columns. What is the maximum

number of columns in which they can march?

13. Express 156 as a product of its prime factors.

14. Find the LCM and HCF of 17, 23 and 29 by the prime factorization method.

15. Find the HCF and LCM of 12,36 and 160, using the prime factorization method.

16. State whether 6/15 will have a terminating decimal expansion or a non- terminating repeating

decimal.

17. State whether 35/50 will have a terminating decimal expansion or a non-terminating repeating

decimal.

18. Find the LCM and HCF of 192 and 8 and verify that LCM x HCM = product of the two

numbers.

19. If are the zeros of the quadratic polynomial p(s)=3s2 -6s+4, Find the value of

+ 2 + 3

20. If are the zeros of the quadratic polynomial f(x) = x2-p(x+1) –c, show that

( = 1-c

21. If the polynomial 6x4+8x3 + 17x2+21x+7 is divide by another polynomial 3x2+4x+1, the

remainder comes out to be ax+b, find a & b.

22. X takes 3 hours more than Y to walk 30km. But, if x doubles his pace, he is ahead of y by 1½

hours. Find their speed of walking.

23. Student of a class are made to stand in rows. If one student is extra in a row, there would be

2 rows less. If one student is less in a row there would be 3 rows more, find the no. of

students in the class.

24. Find the zeroes of the polynomial x2+1/6x-2, and verify the relation between the coefficients

and the zeroes of the polynomial.

25. Find the zeroes of the following polynomial by factorization method and verify the relations

between the coefficient of the polynomials 2s2-(1+2 2) s + 2

26. Find a quadratic polynomial, the sum and product of whose zeroes are 2 and -3/2, respectively.

Also find its zeroes.

27. If the remainder on division of x3+2x

2 +kx + 3 by x -3 is 21, find the quotient and the value of

k. Hence, find the zeroes of the cubic polynomial x3+2x

2+kx-18

28. Given that 2 is zero of the cubic polynomial 6x3+2x

2-10x-4 2, find its other two zeroes.

29. Given that x- 5 is a factor of the cubic polynomial x3-3 5x

2+13x-3 5, find all the zeroes of the

polynomial.

30. For which value of a and b, are the zeroes of q(x)= x3+2x

2 +a also the zeroes of the polynomial

p(x)=x5-x

4-4x

3+3x

2+3x+b? Which zeroes of p(x) are not the zeroes of q(x)?

DELHI PUBLIC SCHOOL SAIL Township, Ranchi

Summer Holiday Assignment (2016-17)

Class:-X Subject:- General Science

PHYSICS

1. The following I-V graph is plotted for a metallic wire at two

different temperature T1and T2 which of the two temperature

is higher & why?

2. Calculate equivalent resistance between A& B.

3. Calculate equivalent resistance between A& B.

4. Calculate I in the following circuit.

5. State the conditions when Ohm‟s law will be not followed.

6. Two heating coils one of the fine wire and other of thick wire, made of same material and same length

are connected one by one to a source of electricity. Which one of the two coils will dissipate electric

power at a greater rate and why?

7. How many 176 Ω resistors (in parallel) are required to carry 5 A on 220 V line.

8. Why are the conductors of electric heating devices are made of alloy rather than a pure metal.

9. Why are copper and aluminum wires usually employed for electricity transmission?

10. Project – A project on commonly used components in an electric circuit along with their applications.

CHEMISTRY

1. What is meant by exothermic and endothermic reaction ? Explain with example.

2. Write three observation when lead nitrate powder is strongly heated. Explain with the help of chemical

reaction.

3. Explain by giving one example, how oxidation and reduction proceed side by side.

4. What happens when a strip of lead is placed in a solution of copper chloride?

5. Complete the following reaction and balance it – (Provide necessary condition also)

(a) Fe + H2O

(b) CO + H2

(c) BaCl2+Al2 (SO4)3

(d) MnO2+Hcl

6. What happens when ferrous sulphate crystals are heated? Give equation of the reaction which take place.

7. Write the difference between displacement and double displacement reaction.

8. Define combination reaction with example.

9. A yellowish coloured compound „X‟ is a photosensitive material. On exposure to sunlight, it gives a

greyish substance „Y‟ and brown fumes of a gas „Z‟

Identify the X, Y, Z

How will you obtain „X‟ from the nitrate salt of „Y‟?

10. Prepare a project on „Alloys‟ by mentioning introduction, characteristics, advantages of using alloys,

different examples, their uses and bibliography. (Paste suitable pictures). Maximum page limit is 10.

BIOLOGY

1. What are enzymes?

2. What is peristaltic movement?

3. Name the following in human system.

(a) Balloon like structure richly supplied with blood capillaries.

(b) The alkaline medium producing organ

[ In Human Digestive System]

(c) It helps in absorption of water.

[In Human Digestive System]

(d) The organ that produce pepsin.

(e) It helps in absorption of digested food.

(f) The part that controls the exit of the waste undigested materials.

4. Three organism ate food in the form of glucose and the end products after respiration are:-

(a) Ethanol + CO2 (b) CO2+ H2O

( c) lactic acid + water

Explain how is this possible.

5. Give the role of the following

(a) Bile (b) lymph

( c) Bio-catalyst (d) Saliva

6. Draw a well-labelled diagram of human digestive system.

7. With the help of diagram explain the opening and closing of stomata.

8. During the experiment to prove that sunlight is necessary for photosynthesis why leaf

should be boiled in alcohol over water bath.

9. Prepare a project on the topic ‘Sources of Energy’. The project should be properly illustrated,

labeled and its source should be mentioned.

DELHI PUBLIC SCHOOL SAIL Township, Ranchi

Summer Holiday Assignment (2016-17)

Class:-X Subject:- Social Science

HIS./CIV./ECO

Assignment -1

1. Make a project on “ Horizontal Distribution of Power”, giving equal emphasis to different organs

of the government.

Assignment-2

1. Why did Industrialists Revolution started first in England? Give Reasons.

2. Why did some Industrial in 19th

century prefer hand labour over machines?

3. Why did industrial production in India increase during the First World War?

GEOGRAPHY

(b) Assignment –I

Topic : Resource & Devlopment

1. Show the types of resources on various basis in tabular form with example from each.

2. Write 3 problems which has led due to use of resources indiscriminately by human being.

3. Define Sustainable Development.

4. (a) What was addressed by the first International Earth Summit?

(b)What was the aim of the Agenda 21?

(c) Assignment –II

Make a project on any one of the following topic:

1. Tsunami

2. Safer construction practices.

3. Survival Skill

4. Alternate communication system during disasters.

5. Sharing Responsibilities.

(Total 10 pages on A4 size sheet.

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