NEW ERA PUBLIC SCHOOL- DWARKA HOLIDAY HOMEWORK

CLASS X (2017-18)

ENGLISH

1. Using satirical devices covered in “Mrs. Packletide’s Tiger”, attempt to write a story in not

more than 150 words, about something that you feel should not be happening in your classroom,

your colony or in your city.

2. Referring to Saki’s short story “Mrs. Packletide’s Tiger”, and based on your own research,

write an article on 'sport hunting' in Colonial India in about 150 words.

3. Write a book review of "The Diary of a Young Girl” in 400-500 words, in your notebook.

4. Scan the daily newspaper for articles about ‘gender notions’ and how they affect the growth of

a society. Using any two of them as the basis, write two letters to the editor in about 150 words,

in your notebook.

HINDI

MATHEMATICS

1. Bring articles, amazing facts, riddles, cross-words or recent discoveries in the field of

Mathematics for the school magazine.

2. Make a chart on the following topics :

Roll no. 1 – 5 : Trigonometry (Trigonometric ratios and their values at special angles /

definition of trigonometric ratios)

Roll no. 6 – 10: Arithmetic Progression (introduction, formulae, and example)

Roll no. 11 – 15: Statistics (definition and formulae of Mean (all three methods) , median

and mode)

Roll no. 16 onwards: Coordinate Geometry (distance formula and section formula –

definition and formulae)

NOTE: A light coloured thick chart paper should be used by each student. Border should be

properly made, a dark coloured sketch pen or marker should be used to write in block letters.

Figures drawn and paper cutouts (if pasted) should be neat and of legible size.

Maths Assignment (to be done in class work Set B notebook)

Polynomials

1. Find the quadratic polynomial, the sum and the product of whose zeroes are 1/2, and –2 .

2. Find the values of m and n for which x = 2 and –3 are zeroes of the polynomial: 3x2 – 2mx +

2n.

3. Check whether x2 + 4 is factor of x4 + 9x2 + 20.

4. Divide the polynomial (x4 + 1) by (x – 1) and verify the division algorithm.

5. Find all zeroes of x4 – 3x3 – 5x2 + 21x – 14, if two of its zeroes are √7 and – √7 .

6. On dividing x3 – 3x2 + x + 2 by a polynomial g(x), the quotient and remainder were x – 2 and

–2x + 4 respectively, find g(x).

7. Find k so that x2 + 2x + k is a factor of 2x4 + x3 – 14 x2 + 5x + 6. Also find all the zeroes of the

two polynomials.

8. Given that x – √5 is a factor of the cubic polynomial x3 – 3√ 5x2 + 13x – 3 √5 , find all the

zeroes of the polynomial.

Pair of linear equations in two variables

1. Ankita travels 14 km to her home partly by rickshaw and partly by bus. She takes half an hour

if she travels 2 km by rickshaw, and the remaining distance by bus. On the other and, if she

travels 4 km by rickshaw and the remaining distance by bus, she takes 9 minutes longer. Find the

speed of the rickshaw and of the bus.

2. A person, rowing at the rate of 5 km/h in still water, takes thrice as much time in going 40 km

upstream as in going 40 km downstream. Find the speed of the stream. A motor boat can travel

30 km upstream and 28 km downstream in 7 hours. It can travel 21 km upstream and return in 5

hours. Find the speed of the boat in still water and the speed of the stream.

3. A two-digit number is obtained by either multiplying the sum of the digits by 8 and then

subtracting 5 or by multiplying the difference of the digits by 16 and then adding 3. Find the

number.

4. A railway half ticket costs half the full fare, but the reservation charges are the same on a half

ticket as on a full ticket. One reserved first class ticket from the station A to B costs Rs 2530.

Also, one reserved first class ticket and one reserved first class half ticket from A to B costs Rs

3810. Find the full first class fare from station A to B, and also the reservation charges for a

ticket.

5. Susan invested certain amount of money in two schemes A and B, which offer interest at the

rate of 8% per annum and 9% per annum, respectively. She received Rs 1860 as annual interest.

However, had she interchanged the amount of investments in the two schemes, she would have

received Rs 20 more as annual interest. How much money did she invest in each scheme?

6. Vijay had some bananas, and he divided them into two lots A and B. He sold the first lot at the

rate of Rs 2 for 3 bananas and the second lot at the rate of Re 1 per banana, and got a total of Rs

400. If he had sold the first lot at the rate of Re 1 per banana, and the second lot at the rate of Rs

4 for 5 bananas, his total collect

Q1 - If the mean of the following data is 20.6, find the value of p.

ion would have been Rs 460. Find the total number of bananas he had .

Statistics

x: 10 15 p 25 35

f: 3 10 25 7 5

Q2 -If the median of the following frequency distribution is 46. Find the missing frequency.

Variable 10-20 20-

30

30-40 40-50 50-60 60-70 70-80 Total

Freq. 12 30 P 65 q 25 18 229

Q3 - The total number of marks scored by class in test is given below. Find the mean.

Below 20 4

Below 40 12

Below 60 30

Below 80 44

Below 100 50

Q4 - Find the mean of following frequency distribution by assumed mean method:

Class-interval: 0-10 10-20 20-30 30-40 40-50

No. of workers: 7 10 15 8 10

Q5- Find the mode for the following data:

Classes 10-20 20-30 30-40 40-50 50-60 60-70 70-80

Frequency 4 8 10 12 10 4 2

Q6 . Change the following distribution into more than type and draw its ogive.

Size of

items:

0-

4

4-

8

8-

12

12-

16

16-

20

20-

40

24-

28

28-

32

32-

36

36-

40

Frequency: 5 7 9 17 12 10 6 3 1 0

SCIENCE

General instructions

1. Students will prepare a model and a chart on the allotted topics. Roll no:1-7(model-1),

roll no:8-14(model-2) and roll no:15-21(model-3).

2. The model to be prepared should have a strong base.

3. The chart related to the model should be made on white pastel sheet.

S. No. Class X (Model and project topics) Parameters

1. Model on alternative energy

production(Model)

Energy production methods- bio fuels,

waste fermentation, energy from water

or magnetic electricity etc.

2. Model on water conservation

techniques in agriculture(Model)

Smart fields, drip irrigation, modern

irrigation techniques to save water or

any other

3. Biomimicry-Nature does not produce

wastes. Learn from nature and design

industrial processes in such a manner

that the wastes of one industry are

the raw materials of another(Model)

Make a model showingn3/4 industriial

processes that can be linked and no

waste is produced. The raw materials of

one industry are the waste material of

another. The industries can be linked

with colourful straws or woollen

threads.

Science Assignment - May,2017

Topics

1. Chemical Reactions and Equations

2. Life Processes

3. Electricity

1. What is the role of the large intestine in the process of nutrition?

2. How will you test for carbon dioxide gas and hydrogen gas?

3. Preeti heated some crystals of sugar in a test tube. The sugar turned black. Why?

4. A substance X, which is an oxide of an element found in bones. On treatment with water

it forms a solution which turns red litmus blue. Identify X and also write the reactions

involved.

5. Why do the walls of trachea not collapse due to changes in air pressure?

6. Why are reagents like silver bromide stored in dark bottles?

7. What are the conditions required for efficient gaseous exchange in living organisms?

8. Why is the small intestine longer in herbivores than in carnivores?

9. Why are saprophytes very important in nature?

10. “The breathing cycle is rhythmic whereas exchange of gases is a continuous process”.

Justify this statement.

11. Leaves of a healthy potted plant were coated with Vaseline. Will this plant remain

healthy for long? State three reasons for this.

12. What is the advantage of double circulation in mammals and birds?

13. What will happen to a plantif its xylem is removed

14. Why are the walls of the ventricles thicker than the walls of the atria in the human heart?

15. How are the arteries and veins connected?

16. An electric lamp is marked 25W, 220V. It is used 10 hours daily. Calculate its resistance

while glowing and the energy consumed by it in kWh per day.

17. Why is an ammeter connected in series and a voltmeter in parallel in a circuit?

18. Why are domestic circuits not connected in series?

19. Two wires of nichrome and copper of the same length are connected in series and a

current I is passed through them. State the change in the temperatures of the wires. State

the law that governs this observation.

20. Mohit attached three 1000W appliances in the same socket. The MCB fuse got

disconnected. His father advised him to attach only one appliance in one socket for

proper functioning.

a) Why too many appliances should not be connected in a single electric socket?

b) What is the function of the electric fuse?

c) What are the values shown by Mohit’s father?

SOCIAL SCIENCE

PREPARE A PROJECT FILE WITH FOLLOWING DETAILS:

1. The total length of the project report should not be more than 15 written pages of foolscap size

(A-4 size preferably white) sheet.

2. The project report should be handwritten and credit will be awarded to original drawings,

illustrations and creative use of materials.

3. The project report should be presented in a neatly bound simple folder.

4. The project report should be developed and presented in this order-

a) Cover pageshowing project title, student information, school and year.

b) List of contents with page numbers.

c)Acknowledgements(acknowledging the institution, offices and libraries visited and persons

who have helped).

d) Chapterswith relevant headings.

e) Summary and conclusionsbased on findings.

f)Bibliography: should have the Title, author, publisher and if a website the name of the website

with the specific website link which has been used.

MARKS DISTRIBUTION

Total Marks will be allocated over the different aspects of the Project Work in the following

manner:

1. Content accuracy and originality- 4

2 .Presentation and creativity- 2

3 .Process of Project Completion: Initiative and punctuality-2

4. Viva or written test for content assimilation- 2

Total Marks for one project -10

Suggested Projects:

1. R.NO.-1-4 India : The upcoming superpower

2. R.NO.-5-8 India’s freedom movement from the eyes of Mahatma Gandhi.

3. R.NO.-9-12 Disaster Management Project on the natural and human induced disasters.

4. R.NO.-13-15 Cultural Heritage of India.

5. R.NO.-16-18 Consumer Awareness.

6. R.NO.-19-21 Pocket guide on First Aid.