NEW ERA PUBLIC SCHOOL-DWARKA

Holiday Homework (2018-19)

Class XI Dear Students,

Summer break is the best time to rejuvenate and unwind. It not only serves as a

time to rest, revise and play, but also gives one the reason to be in the company

of friends, family and relatives,

travel, explore oneself, and

introspect.

Remember the following through

your vacays, to keep yourself

refreshed and revivified!!

Spend quality time with

friends and family.

Exercise and play, keep you

fit and active. Surmount the

playground each evening!

Develop a hobby. Read, sing,

dance, research, collect valuables, or just learn new things.

Volunteer to help your parents, siblings or friends.

Study and revise daily. Take out time to complete your assignments. Do

not delay or postpone work.

Be productive, but remember to relax.

Subject: English

Assignment Questions

(To be attempted in the English register)

Guidelines:

1. Attempt all questions neatly. 2. Write the questions or paste the assignment in your register. 3. Use pencil for drawing boxes, wherever applicable. 4. Refer to the formats written in your class register to attempt the practice questions.

Q1. (a) Cut and paste a short report from a newspaper in your register. On the basis of your

reading of the report, make notes, using headings and sub-headings. Use recognizable

abbreviations wherever necessary.

(b) Make a summary of the report in not more than 80 words.

Q2. Imagine you are the Principal of a school. Write a letter to Messers Intex Technologies Inc.

enquiring about the supply of their students’ tablet “Buddy” for your school. Introduce your

school and specify your requirement- model of the tab., no. of pieces required. Enquire about

the specification of the tablet and its price, including taxes. Find out how much time the

company will need to supply the tablets and how it would like to be paid. (100-120 words)

Q3. Draft a speech to be delivered in the morning assembly highlighting the dangers of

excessive, ill-timed and inapt use of mobile phones. (150-200 words)

Q4. Draft a notice informing the students of your school to register for the upcoming Talent

Hunt contest. Give all necessary details. Sign yourself as Abhay/ Ashmita, the Cultural

Secretary of the school. (50 words)

Q5. Write an article on any one of the given themes, giving it a suitable title. (150-200 words)

a) Censorship of the Internet b) Vocational Training in School Curriculum

c) Handling Stress d) The Many Dilemmas of a Teenager.

Q6. Swasti of 102, Civil Lines, New Delhi desires to be a Flight Attendant. She writes to the

Director of the Frankfinn Institute of Air Hostess Training, Janakpuri New Delhi, seeking

information about their courses, admission procedure, eligibility criteria, fee structure,

placement opportunities etc. Write her letter. (100-120 words)

Project (To be attempted on A4 sized printed sheets, compiled in a transparent stick file)

Create a report on any one of the following topics. Prepare an attractive cover page. Include

examples, studies, images to substantiate your report. Also offer suggestions to conclude your

report. The last page must include the bibliography. (10-12 pages)

1. Social Media 2. Illiteracy: A Curse 3. Religious fanaticism

4. Tracing Casteism in Modern India 5. Linguistic Conflicts in India

6. Juvenile Delinquency 7. Gender Inequality 8. International Understanding

9. Human Rights 10. Violence against Women

Subject: Chemistry Assignment Questions

Assignment - I

1. What is the mass of one mole of electrons?

2. A complex of iron contains 45.6% iron by mass. Find out number of iron atoms in

5.00 g of this complex.

3. What volume of CCl4 having density 1.5 g/cc contains 1 x 1025 chlorine atoms?

4. Calculate the molarity of 20% solution of KOH by mass whose density is 1.02

g mL-1.

5. 100 mL of 0.1 M NaCl solution is mixed with 100 mL of 0.2 M AgNO3 solution.

Find out the mass of AgCl precipitate formed. Which reactant is acting as limiting

reagent?

6. The percentage composition of Mohr’s salt is as follows

Fe2+ = 14.32% , NH4+ = 9.20% , SO4

2- = 49% , rest being water of crystallization.

Find the empirical formula of Mohr’s salt.

7. From 200 mg of CO2 , 1021 molecules are removed, how many moles of CO2 are

left?

8. 150 mL of M/10 HCl is required to react completely with 1.0 g of a sample of

limestone. Calculate the percentage purity of calcium carbonate.

9. C2HF3 + HF → C2H2F4

What mass of C2H2F4 can be produced and what mass of excess reagent remains at

the end of reactions if 100.0 g of C2HF3 is mixed with 30.12 g of HF.

10. Compound X contains 0.25% iron by mass. The molecular mass of X is 89600.

Calculate the number of iron atoms per molecule of X.

Assignment – II

1. .……… atoms of oxygen are present in 300 g of CaCO3.

2. The percentage of oxygen in CuSO4.5H2O is ………..

3. …………grams of HCl are required to prepare 4 litres of 5M HCl in water.

4. An oxide of nitrogen with molecular mass 92 has 30.4% nitrogen. The molecular

formula is……..

5. 100 mL of 10M HCl are diluted with distilled water to a volume of 2 litres. The

Molarity of the resultant solution is………..

6. The number of atoms and molecules of nitrogen in 224 mL of nitrogen at STP are

…… and ……respectively.

7. Mass of one atom of calcium is ……….,if atomic weight is 40 g mol-1.

8. 6.023 x1020 molecules of a substance weigh 44 mg,……is the molar mass of the

substance.

9. ……..grams of calcium is present in Ca(NO3) 2 that contains 42 g of nitrogen.

10.If 1 mole of ethanol completely burns to CO2 and H2O,the weight of CO2 formed

is ………….

PROJECT

General instructions

1. Students will prepare a model and a chart on the allotted topics.

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 XII (Model and project

topics)

Parameters

1. E-waste management: Recycle

today for a better tomorrow.

Make a model showing insight

into technologies for various

levels of recycling and recovery

of valuable resource.

2. Go Carbon neutral: Start from

your society.

Make a model of a residential

society where there is zero

carbon emission, because of using

renewable sources, emphasize the

use of other sustainable sources of

energy

Subject: Physics Assignment Questions

Do the following assignment in the assignment register:

1. What do you mean by accuracy and precision? Distinguish between them.

2. Name four fundamental forces in nature and compare their strengths.

3. What do you mean by unification and reductionism?

4. What is parallax? How will you use this method to find the distance of a nearest star?

5. Define principle of homogeneity. Write some limitations of dimensional analysis.

6. What do you mean by average speed and instantaneous speed? What is the condition when

these two will be equal?

7. Derive equations for uniformly accelerated motion by graphical method and calculus

method.

8. What do you mean by uniform circular motion? Define centripetal acceleration and write an

expression for it.

9. What do you mean by projectile motion? Derive an expression each for time period, range,

and maximum height for an object projected obliquely from ground at some angle.

10. State triangle’s law of vector addition. Derive an expression for magnitude and direction of

resultant of two vectors.

PROJECT

Post class X, you had to choose between different streams (Science, Commerce and

Humanities). You opted for Science (whether medical or non-medical). The stream you have

chosen for yourself will impact your career choices in future, and thus plays a pivotal role in

your life.

Create a project report covering the following:

Mention the specific reasons for opting the Science stream.

What do you want to be and ways to accomplish your ambition?

(For example if someone wants to be an engineer, he/she needs to pass twelfth class with good

percentage, clear entrance exams for engineering and do B. Tech from reputed college or

university)

Do you know what is PHYSICS and how is it different from other subjects? You need to

write a report on how Physics has changed the world in last 100 years. Find out about the

revolutionary inventions in the subject which changed the world in a better way. (You can also

write about some great physicists and their contribution to PHYSICS).

NOTE:

1. Project report must be neat and clean.

2. It must be in your handwriting. printouts are not allowed.

3. Related pictures and diagrams can be taken as printouts.

4. All files must be covered with brown chart paper.

Subject: Biology Assignment Questions

1) While each of the membrane bound organelles in eukaryotic cells is distinct in terms of

structure and function, some of them are considered together as an endomembrane system.

a) Name the cell organelles included in the endomembane system.

b) Why are they called so?

c) Are mitochondria included in this system?

2) Illustrate the nature of bonds linking monomers to make polymer in case of polysaccharides

and proteins.

3) Living state and metabolisms are synonyms. Justify.

4) The concentration of a substrate is allowed to increase continuously. Explain the effect of

this rise on the rate of enzymatic reaction.

5) Enlist the four steps involved in the catalytic action of enzyme.

6) Explain the structure of DNA with the help of a well labeled diagram.

7) An organism has two pair of chromosomes . Diagramatically represent the chromosomal

arrangement during different phases of meiosis II.

8) A scientist has come across a plant which he feels is a new species. How will he go about its

identification, classification and nomenclature.

9) ‘Peat’ is an important source of domestic fuel in several countries. How is peat formed in

nature?

10) Biological classification is a dynamic and ever evolving phenomenon which keeps

changing with our understanding of life forms. Justify the statement taking two examples.

11) Make a list of algae and fungi that have commercial value as source of food, chemicals,

medicines and fodder.

12) State contribution of any 5 biologists in the field of Biology.

B) Investigate on the topic assigned and discussed in the class, and submit it as a project report.

Subject: Mathematics Assignment Questions

SETS

1. There are 35 students in art class and 57 students in dance class. Find the number of

students who are either in art class or in dance class.

(i) When two classes meet at different hours and 12 students are enrolled in both activities.

(ii) When two classes meet at the same hour.

2. In a competition, a school awarded medals in different categories. 36 medals in dance, 12

medals in dramatics and 18 medals in music. If these medals went to a total of 45 persons and

only 4 persons got medals in all the three categories, how many received medals in exactly two

of these categories?

3. Each student in a class of 40 plays at least one indoor game- chess, carrom and scrabble. 18

play chess, 20 play scrabble and 27 play carrom. 7 play chess and scrabble, 12 play scrabble

and carrom and 4 play chess, carrom and scrabble. Find the number of students who play chess

and carrom. (ii) chess and carom, but not scrabble.

TRIGONOMETRIC FUNCTIONS

4. Show that √2 + √2 + 2 cos 4θ = 2 cos θ.

5. Draw the graph of cos x in [0, 2].

6. Show that cos 20° cos 40° cos 80° = 1

8.

Find the general solution of the following :

7. sin 7x = sin 3x

8. 3 tanx + cotx = 5 cosec x

9. √3 cos x – sin x = 1

10. sin2x + sin4x + sin6x = 0

Prove the following :

11. sec 8A-1

sec 4A-1=

tan 8A

tan 2A

12. tanA + 2tan2A + 4tan4A + 8cot8A – cotA = 0.

13. cos 3A = 4 cos3A – 3 cos A.

14. cot B – cot 2B = cosec 2B.

COMPLEX NUMBERS

15. Prove that: (i ) i104 + i109 + i114 + i119 = 0 (ii) 6i 54 + 5i 37 – 2i 11 + 6i 68 = 7i

16. Solve for x and y : x - 1

3 +i-

y-1

3-i= i

17. Find the multiplicative inverse of : 3 + 2i

2-3i-

3-21

2+3i

18. Express the following in the polar form : (i) – 3√2 + 3√2 i (ii) 5- i

2-3i

19. Find the values of x and y for which the complex numbers 3 + ix 2 y and x 2 + y + 4i

are conjugate of each other.

20. Solve for x : (i) x2 – (3√2 + 2 i) x + 6√2i = 0 (ii) 3x2 + 8ix + 3 = 0

Subject: Computer Science I. Create a Power Point presentation (minimum 10 slides) on any one of the following topics

and bring the presentation in a pen-drive:

1. Types of Operating System

2. Open Source Software

3. Object Oriented Programming Methodology

Attempt the following questions in your Computer Science register:

II. Explain the different generations of computers with focus on the time-periods,

characteristics and examples of each generation.

III. Differentiate between SRAM and DRAM.

IV. Elaborate the functions of various types of ROM’s.

V. Writing a good program is a skill. What are the stylistic guidelines to be followed for

developing a good program?

VI. Perform the following mathematical conversions:

(i) (34587)10 into binary (iii) (33445566.7788)8 into hexadecimal

(ii) (573.62)2 into octal (iv) (8209.54)16 into decimal

VII. Write an algorithm and develop a flowchart for the following problems:

1. To prepare a cup of tea.

2. To find the smallest of three numbers.

3. To print all natural numbers upto 60.

VIII. Write C++ programs for the following:

1. To check whether an year input from the user is a leap year or not.

2. To generate Fibonacci series 0 1 1 2 3 5 8 13 21……upto a number n input

from the user.

3. To check whether a number input from the user is prime or composite.

Subject:Business Studies

Assignment Questions

Nature and purpose of Business 1. ‘Business cannot fulfill its economic objectives, without fulfilling its social and human

objectives.’ Comment.

2. ‘Auxiliaries to business activities are indispensable.’ Discuss.

3. ‘Business risks take place due to carelessness of people and it can be completely

eliminated. ‘Do you agree? Give reasons.

4. Which type of cause of Business Risk is ‘power failure’? Explain.

5. In which type of secondary industry, various raw materials are combined together to

make the final product?

6. Name and explain two features of business which involve possibility of loss.

7. Which cause of business risk is ‘change in technology’ an example of?

8. Sameera has done Post graduate diploma in clothing and textiles from a premier

institute. Though she does not have any business experience, she wants to start her own

business of manufacturing readymade garments of the latest fashion. These garments will

be sold in Indian markets as well as exported to prominent foreign countries. Questions:

(a) Is Sameera’s lack of business experience a significant risk for the business? If yes, in

what way?

(b) What are the other risks that are involved in garment business?

Forms of Business Organization 1) In case of recovery of debts against a sole proprietor filed by the creditor, the court

rejected the sole proprietor’s plea that firm was responsible for paying off the business

debt. This is due to which feature of sole proprietorship?

2) “One man control is best in the world if that man is big enough to manage everything.”

Explain the statement.

3) The business assets of a firm are worth `70,000 but the debts remain unpaid are worth

1,00,000. What course of action can the creditors take in the following cases:

a) The organization is a sole proprietor firm.

b) The organization is a partnership firm with A and B, two partners sharing profit equally.

4) What factors are important to be considered while starting a business?( any five points)

5) The business of a sole proprietor is expanding. He is confused whether to appoint a

manager or to admit a partner into the business. Give three reasons in support of both the

options available to him.

6) Which certificate is called the birth certificate of a company and why?

7) “A promoter cannot be the trustee or an agent of a company.” Comment.

8) Differentiate between Memorandum of Association and Article of Association (any six

points).

9) Explain the merits and limitations of joint Hindu Family form of business.

10) What are the merits and demerits of Sole-proprietorship form of business.

11) Name the various forms of Cooperative societies. Explain any three in detail

12) Explain the following terms

a) Qualification Shares

b) Preliminary contracts

c) Provisional contracts

➢ Complete the Project work on assigned topic and submit after the summer break.

➢ Prepare a collage on Corporate Social Responsibility by any company. (include pictures

etc.)(A3 sheet)

➢ Write about the Top Companies in terms of their CEO, Turnover, Market Share etc.

with pictures(A3 sheet)(on any one of the following):

a) Automobile sector b) Pharmaceuticals c) FMCG d) Telecom

e) IT f) Hospitality g) Food chain

Subject: Accountancy Assignment Questions

1) On 1st April, 2015 Mr. Kamal was appointed as Finance Manager of the firm with a salary of `60,000 per

month. State whether this event will be recorded in the books of accounts.

2) “Accounting information should be comparable.” Do you agree with this statement? Give reasons.

3) Non – monetary transactions are not recorded in the books of accounts.” Explain.

4) State the nature of information required by Investors.

5) What do you mean by accounting period?

6) Write any two examples of intangible assets.

7) On 1st April, 2015 Mr. Kamal was appointed as Finance Manager of the firm with a salary of `60,000

per month. State whether this event will be recorded in the books of accounts.

8) “Accounting information should be verifiable.” Do you agree with this statement? Give reason.

9) What are the steps in the accounting process?

10) Explain the following accounting terms :

a) Asset b) Income c) Drawings d) Fictitious Assets e) Depreciation

f) Cash discount g) Expenditure h) Gain h) Current Assets

11) What is owner’s equity? Give an equation for calculating owner’s equity.

12) On 31st March 2014, a businessman had the capital worth ` 9,00,000 . External liabilities and assets as on

1st April 2013 were ` 1,20,000 and ` 2,00,000 respectively. During the year, the proprietor had

withdrawn ` 20,000 and introduced ` 26,000 as additional capital. Find out his profit or loss during the

year.

13) Mr. Munjal started a business on 1st April, 2014 with a capital of ` 1,80,000 and a loan of `60,000 taken

from SBI Bank. During 2014-15, he had introduced additional capital of ` 45,000 and had withdrawn `

35,000 for personal use. On 31st March, 2015 his Assets were ` 2,50,000. Find out his capital as on 31st

March 2015 and profit made or loss incurred during the year 2014-15.

14) Show the accounting equation on the basis of the following transactions.

• Sitaram commenced business with cash ` 2,00,000 and goods ` 60,000.

• Opened a Current account with PNB and deposited ` 45,000.

• Purchased goods on credit from Goyal & Brothers ` 22,000.

• Paid Rent ` 5,000 by cheque and Rent outstanding ` 5,000.

• Sold goods on credit to Rohan costing ` 14,000 for ` 12,500.

• Donated goods costing ` 1,000 to a charitable trust.

• Investment made in shares ` 4,000 for personal use.

• Interest charged on drawings @ 10% p.a.

15) Show the accounting equation on the basis of the following transactions and also show the Balance

Sheet.

• Started business with cash ` 1, 50,000, Machinery ` 3, 00,000 and Inventory ` 2, 00,000.

• 30% of the above goods are sold to Priya at a profit of 331/3% on cost and received 50%

payment in cash and for the balance drawn a bill of exchange for 3 months.

• Depreciation charged on Machinery @ 10% p.a. for 4 months.

• Rent received ` 15,000 including ` 6,000 in advance.

• Purchased goods for ` 30,000 and paid half the money in cash.

• Paid to creditor ` 14,000 in full settlement.

• Goods costing ` 5000, selling price ` 6000 destroyed during flood.

Subject: Economics Assignment Questions

1. Explain the effects of the following on PPC

(a) Production in an economy is below its potential due to unemployment. Govt. starts

income generation schemes.

(b) Economic slowdown in some parts of the world has adversely affected demand for

Indian exports

(c) The government has started promoting foreign capital.

(d) Large no. of technical training institutions have been started by the government.

(e) Govt establishes a Large number of institute of science and technology

(f) There is widespread flood or any other natural calamity

(g) Launching of ‘Clean India Mission’ (Swachh Bharat Mission)

(h) Large scale outflow of foreign capital

(i) “Make in India” appeal to the foreign investors by the Prime Minister of India

(j) Efforts towards reducing unemployment

(k) Efforts for Widespread of education

(l) Launching of ‘Digital India’ programme

(m) Massive Unemployment in the country

Project

According to the guidelines specified by CBSE and as explained in the class, prepare a

questionnaire based on consumer items like mobile phones, laptops, bikes, networking

companies, magazines, pen, online shopping etc.

Instructions:

1. Divide the Questionnaire in the parts.

a. Personal information.

b. Product or service information.

c. Consumer awareness.

2. Personal information should contain name, gender and age of the informant.

3. Consumer awareness questions should be limited.

4. No. of questions should be between 15-20.

Subject: Physical Education Assignment Questions

1. Write about the following in your practical file:

a. Athletics (Samar Publications)

b. Volleyball

2. Create a project on any one sportsperson who inspires you. Use pictures and write

about his/her journey as a sportsperson.

Subject: Informatics Practices Assignment Questions

I. Create a Power Point presentation (minimum 10 slides) on any one of the following topics

and bring the presentation in a pen-drive:

1. Information Security, Security threats and their measures

2. Update on the latest gizmos.

3. E-business

4. Rapid Application Development (RAD) model of Programming

Attempt the following questions in your Informatics Practices register:

II. What are the various types of Biometric Devices? Explain the functionality of each device.

III. Differentiate between:

(i) Software and Firmware

(ii) Virus and Worm

(iii) Spyware and Adware

IV. Write a short note on E-waste and E-waste disposable mechanism.

V. Study the interface of NetBeans IDE and make a report on any 10 of its features.

Subject: Political Science Assignment Questions

1. “Constitution of India is a bag borrowing”. Explain.

2. Distinguish between the Fundamental Rights and the Directive Principles of state

policy.

3. What is meant by freedom of expression? What in your view would be reasonable

restrictions on this freedom? Give examples.

4. ‘The system of Proportional Representation avoids the wastage of votes.’ With

reference to the statement compare the merits and demerits of FPTP and PR system of

elections.

5. State any two differences between flexible and rigid constitutions.

6. Describe the importance of the constitution for a democratic country.

7. Explain the composition and functions of the National Human Rights Commission.

8. Describe the case of Machal Lalung in Assam. Which fundamental right was violated

in this case? What does this incident show?

9. Explain the Right to Equality as granted under the Indian constitution. Write about the

exceptions to it. How is right to equality still violated in various parts of our country?

10. Describe the system of Proportional Representation in Israel.

11. Give arguments to prove that India’s election system has proved to be a successful

system.

12. Describe the various suggestions for reforming our election system.

13. Distinguish between the political executive and permanent executive.

14. Explain the election, position and powers of the President of India.

15. Describe the appointment, powers and position of the Prime Minister in India.

Subject: History Assignment Questions

General Instructions:

Students should prepare individual dummy projects of about 30-35 pages for CBSE

assessment. The project should be prepared according to the guidelines already issued in class.

The project should include the following sections:

1. Cover page- Displaying the topic.

2. Acknowledgement – Thanking the people or institution that has helped you in

completion of your project.

3. Certificate- Mentioning your name and the name of teacher under whose supervision

you have completed your work.

Index- Giving the list of contents with page numbers.

5. Introduction- Giving the purpose and importance of a study.

6. Chapters- Give a title to each chapter along with details and pictures.

7. Conclusion- What do you learn from your study?

8. Bibliography- Showing the sources from where you have gathered information.

Present the following in your project report:

Data/Statistical Analysis/Map work

Analysis/Explanation and interpretation

Bibliography

Students can use primary as well as secondary sources for the research work. Choose any one

of the following topics:

1. Anthropological Research based on Darwin’s Theory

2. Critique of the industrialization in Britain

3. Relations and impacts of past crusades

4. Making and unmaking of Mesopotamia

5. Paradigms of Greco-Roman civilization

6. Aspirations of women in Renaissance period

7. Paths to Modernization of Japan / China

8. An Exploratory study into Humanism

9. Piecing together the past of Genghis Khan

10. An in-depth study into “now and then” paradigm of Christianity

11. An exploratory study into the realism and the transmission of Humanistic ideas

12. Scientific Revolution and the origins of modern science

13. An exploratory study into the making of America

14. Myriad Realms of Slavery in ancient, medieval and modern world

15. Learning about global Sufism

16. History of aborigines – America / Australia

Students have to be prepared to give viva on the project in the class.

Note-

A summary/synopsis (one page) of the project has to be prepared covering:

a) The objective statement

b) Their observations and findings

The project must be neat and well-presented and must be completely hand-written.

No whiteners to be used or written matter to be crossed out. In case of any mistake,

re-do the sheet.

Do not number sheets or write dates unless instructed by your teacher. Colour illustrations,

maps, charts may be hand drawn or printed (if it is relevant for any aspect of your project) are

welcome to make them look attractive.