Holiday Homework Class XI (Science)

English

Q.1

a) You are Kumar, sports Secretary of ABC School, Chennai. Write a notice for the school notice

board informing the students that your school is playing a match against M.A.K Sr. Sec. School in

the T.N.C.A cricket finals. Invite them to come and watch the match to cheer the team.

b) You are Priya a student of XII class of Sarojini Model School Hyderabad. You have lost your project

file in the school canteen. Write a notice for the school notice- board giving details of the file and

its contents.

Q.2

a) You have just seen a Nukkad play enacting the changing face of society with a fall in human values.

Write an article on ‘The changing value system-A need for Re- Orientation in 150-200 words.

b) Regular practice of Yoga can help in maintaining good health and even in the prevention of so many

ailments. Write an Speech in 150-200 words on the usefulness of yoga.

Q.3

a) You are Anil/ Anita of 25, Mayur Vihar, New Delhi. As an aware citizen of the country you are

concerned about the increase in road accidents in the metropolitan cities of India. Write a letter to

the Editor of The Chronicle expressing your concern. Also suggest some remedial measures.

b) Write a letter to the Editor of the national daily expressing your concern over the misuse of media for

the sake of publicity and promotion of sales. You are Mohan/Manju, 7/A, Gulmohar park,Punjab.

Q.4 With reference to the Poem “Photograph”, answer the following questions.

a) Which incident has been captured in the snapshot?

b) What do you think, made the poetess’s mother laugh?

c) The poetess’s mother laughs at her past. How does the poet react to her past?

Q.5 Write the paragraph in 150 words of your experience of the days spent with your grandparents.

Q.6 “All we have to fear is fear itself” Narrate a story about conquest of fear and how courage

helped someone to survive under stress (150 words)

Mathematics

Physics

For each function obtain the derivative:

1. y = 12x5 + 3x4 + 7x3 + x2 – 9x + 6

2. y = (2x+3)4

(x+1)3

3. y = 3(x2 + 2x) + 2

4. y= (x-1)2 – 2

5. 10x9 + 15x4 + 6x2

6. x7 + (5/6)x6 + x4

7. 3x2 – 1/x

8. u = (x2 + 2)2

9. y = x-3

x-4

10. √x + 1

11 √x2 − 6x + 7

12. v = 2t +3t4, find dv

dt

13. Displacement of a body is varying according to the equation s = t2 + t3, find its velocity at t = 5s.

14. v = 5t – 10t2, find dv

dt

15. x = 3y + 14y2, find dx

dy

16. v = (8x2 + 5x)2

17. v = (8t4 – 3t1/2) m/s, find the acceleration at the end of 3s.

18. y = 4

√x

19. f(x) = 4 + 4

x

20. y = (2x3 + 3x2 – 5x)2

Chemistry

Practice numerical based on following topics:

1. Scientific Notation 2. Laws of Chemical Composition

3. Dimensional Analysis

4. Average Atomic Mass

5. Mole Concept

6. Empirical Formula and Molecular Formula

7. Stoichiometric Calculations

8. Limiting Reagents

9. Mass percentage and Molarity

10. Molality of the solution

Psychology

1. Prepare a project file on “Contribution of Psychologist”. Any 10 famous psychologists like

Sigmund Freud, B.F. Skinner, Ivar Pavlov, Abraham Maslow, etc.

2. Prepare an A-3 size poster/ chart.

Odd Roll No: – Branches of Psychology.

Even Roll No: -- Motivating thoughts/ quotations from Psychological perspective.

Biology

Chapter 1, 2 and 3:

All questions of exercises at the end of the chapters of NCERT to be done in Homework copies.

Extra questions from these chapters to be done (as given in class)

Practical work: Complete the Experiments 1 – 5 in Practical Records.

1. Herbarium: Collect a few Monocot and Dicot leaves from your surroundings. Dry them and paste

on Herbarium sheets.

2. Collect some common plants. Prepare Herbarium sheets.

Computer Science (C++)

1. Prepare PowerPoint presentation on any of the following topics and bring CDs and print-outs in a proper file:

Hardware and software Strength and weakness of computer Firmware and live ware Evolution of computers Types of computer System software and application software Processor and storage management

2. Revise CHAPTER -3,5,6,7 and 14