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MANAV STHALI SCHOOL

R-Block, New Rajendra Nagar, New Delhi-110060

HOLIDAY HOMEWORK : CLASS - XI2013-2014

ENGLISH

Q-1 Rising temperature, natural calamities like earthquakes, floods, melting glaciers etcare a cause of great concern and immediate action. Keeping in mind the state of 'OurAiling Planet', architects across the world are adopting 'Green House' technologyinstead of cement and brick structures.

Find out about the Green Houses across the world. Write about the technology

adopted and its wonderful effect. Paste pictures alongside of 'Green House' as anevidence.

Also add what more can be done to reduce gases emitted by A.C's Refrigerator,Vehicles, Industries etc. Work on A4 size sheets for a neat and effective presentation.

Q-2 Reading is quite an exciting and interesting venture. Read the novel' The CantervilleGhost' and write a character sketch of any two characters you have liked the most.

Q-3 Project This question carries 25 marks and is the project for the term. This needs tobe done on the coloured sheets.

Being Creative and innovative is an art. Go through newspapers and magazines.Collect various posters, notices, reports, articles, advertisements and invitation cards

that you come across. Make a beautiful presentation with your collection (5 each).

MATHEMATICS

Questions 1-10 should be done on full scape sheets.

3Q1. Let P (n) be the statement: "n +n is divisible by 3". Show that P(3) is true but P(4) is not

true.

3nQ2. Let P(n) denote the statement "2 -1 is a multiple of 7", show that if P(m) is true then

P(m+1) is also true.

2Q3. Prove by mathematical induction that the sum of first n odd natural numbers is n .

Q4. Prove by Mathematical induction that for all n

N(i) 3x6 + 6x9 + 9x12 + ......... +(3n) x (3n+3)=3n(n+1)(n+2)

(ii)

(iii)

(iv)

1

1 1 1 1 n.......

1x 2 2 x 3 3 x 4 n(n 1) n 1++++ =

++

2 n n 11 2 2 ....... 2 2 1+++++=-

2 3 n n 11x 2 2 x 2 3 x 2 ........ n x 2 (n 1)2 2+++++=-+

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Q5. Prove by the principle of mathematical induction that for all nN

(i) is divisible by 8.

(ii) is divisible by 133.

(iii) is multiple of 9.

Q6. Prove by induction that

for all , where a and b are positive real numbers.

Q7. Prove by induction that is a multiple of 4 for . Use it to prove by induction

that for all

is divisible by 24.

Q8. Solve the inequalities and represent the solution set on the number line.

(i)

(ii)

(ii)

(iv)

(v)

(vi)

(vii)

(viii)

(ix)

(x)

2

2n3 1-

n 2 2n 111 12+ ++

n4 3n 1--

nn na b a b

2 2

+ +

n N

n N

n Nn5 1-

n n2 x7 3 x 5 5+-

x 10

x 1

x 11

x 1

x 22

x 5

-

+

-

+

->

+

| x 1| 5 | x | 2-

x 20

x 2

-

+

2 3x 1 x 3 4x

5 3 2

- -+ >

- -

4x 9 3 7x 1 7x 2x , x

3 4 4 3 6

- +-

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Q9. Find the region represented by the inequations.

(i)

(ii)

(iii)

(iv)

(v)

Q10. Eash and Eashan are twins. Each says that his age (in years) when subtracted from itssquare lies between 182 and 240. Eashan says that his age (in year) when added to itssquare lies between 210 and 272.

(i) Do the statement made by Eash and Eshan agree with each other

(ii) Write the system of linear inqualities giving an idea about their age.

(iii) Comment on the behaviour of Eash and Eashan.

Project:

Make a multimedia presentation on any new inventions in Maths or applicationsof Maths related topics and explain the same in the term of a written project report.

CHEMISTRY22

Q1. What is the mass of 3.01 x 10 molecules of ammonia. (Ans:- 0.85g)

Q2. How many molecules and atoms of oxygen are present in 5.6L of O at NTP?2

Q3. How many electrons are present in 1.6g of methane?

Q4. Calculate the mole fraction of benzene (C H ) in a solution which is 30% by mass in6 6CCl ? (Ans:- 0.46)4

Q5. A solution of ethanol in water is 1.6 m How many grams of ethanol are present in500g of solution? (Ans:- 34.27g)

Q6. It is found that 16.50g of metal combines with oxygen to form 35.60g of metal oxide.Calculate the percentage of metal and oxygen in the compound? (Ans:- % metal : 46.3

% oxygen : 53.7)Q7. Moth balls contains 93.71% carbon and 6.29% hydrogen. If its molecular mass is 128g

Calculate molecular formule?

Q8. An organic compound on analysis gave the following % composition: C= 57.8%, H=3.6% the rest is oxygen. The vapour density of the compound was found to be 83. Findthe molecular formula of the compd.

Q9. A sample of hydrochloric and contains 20% HCl by weight. How much of this acid ingms is required for complete reaction with 50g of CaCO ? (Ans: 182.5g)3

3

2x y 8, x 2y 8, x y 6

3x 2y 120, x 4y 80, x 15, x,y 0

2x 3y 6, 4x 6y 24, 3x 2y 3, x y 2, x 0, y 0

+++

+ +

++-+-

x 2y 10, x y 1, x y 0, x 0, y 0

x 0, y 0,2x y 6, 3x 4y 12

++-

++

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Q10. Calculate volume of H gas at STP produced by 5 moles of Zn in the following reaction:2Zn+H SO ZnSO + H (Ans: 112L)2 4 4 2

Q11. Write a short note on:lMolecular orbital theorylHybridisation

PHYSICS

1) Explain the need for measurement in physics

2) Explain briefly the concept of mass, length & time

3) What do you know about fundamental & derived units

4) Define Astronomical unit, light year and parsec. How are they related.

5) Why MKS system had to be rationalized to obtain S.I

6) What are the advantage of SI unit7) Name the fundamental & Supplementary units on SI

8) What is coherent system of units.

BIOLOGY

(ANY 2)

Q1. Prepare a report on cell; the basic unit of life. Discuss its structure and functions.Explain the various organelles of a typical plant cell and animal cells. Draw thediagram of a typical cell.

Q2. Prepare a detail report on Biological Taxonomical Aid/ Tools e.g. zoological parks,Botanical gardens, Natural Museum, Herbaria etc. Make a detail report mentioning

about Botanical Gardens and major gardens of the World, Role of the Botanicalgardens; Major Herbaria, their role, technique: Zoological parks & Museums; theirhistory, care of animals, Management of Zoological parks, object exhibited inZoological Museum etc.

Q3. Prepare a project report on photosynthesis. Describe the site; magnitude andhistory of the process. explain the mechanism of this process. What isphotorespiration? Mention it importance. How is photorespiration different fromphotosynthesis?

Q4. Study the Human Skeleton. Classify the axial and appendicular Skeleton anddescribe each type of bone with example. Define joint and explain the various typesof joints with examples.

Q5. List the Essential elements grouped under Macro and Micronutrients in plants.Mention their physiological roles and deficiency symptoms in a tabular form.

Q6. Explain the structure of human heart in detail. Describe the conduction/ working ofthe heart. Also explain the various coronary heart diseases.

Q7. Prepare a report, after a detail study on following topics (anyone)

(i) Human Genome Project (HGP)

(ii) DNA Finger Printing

(iii) Various Genetic Disorders e.g. - Downs syndrome, Turner Syndrome,Haemophilia etc.

(iv) Biotechnology and its applications

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ENGINEERING GRAPHICS

Draw on A2 size sheet the solution of questions based on following topics:-

(a) Orthographics projection of lines

(b) Orthographics projection of planes

(c) Orthographics projection of solid

(d) Construction of angles and polygons using scale and compass only

Prepare the models of following solids using thick paper or cardboard :-

(a) Prisms triangular, square, pentagonal and Hexagonal

(b) Pyramids Triangular, square, pentagonal and Hexagonal

(c) Cylinder

(d) Cone

COMPUTER SCIENCE/MULTI MEDIA & WEB TECHNOLOGY

Technology is an international phenomenon, spanning continents, opitomized by the worldwide communication of Internet. The High Tech Society focusing on recent tech news anddevelopments as well as game and gadget reviews could also be referred to as the high techsociety.

With the aim of reflecting on the impact of multimedia technologies on contemporary digitalculture, design a brochure on any school event by making use of IT Technology . Bring thePrintouts for the same.

INFORMATICS PRACTICES

1. Advantages of open Source & Free Software in our Life. Make a PresentationOR

2. Role of IT Applications in our life

BUSINESS STUDIES

Q1. Prepare a project report on following topics(any one)

a) Aids to trade (insurance company in India)

b) Stock exchange

Aids to trade (Topics to be covered)lTypes and importance of insurancelTerminologies used like premium, face value, market value, maturity value,

surrender value with meaningslPrinciples of InsurancelCareers in InsurancelFuture of insurance in India

STOCK EXCHANGE

lHistory of stock exchange in india

lPrepare a list of at least 25 companies listed on stock exchange

lIdentify the top ten companies out of 25 selected on the basis of their marketvalue of shares.

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lEffect on price of shares due to change in market value, change in political envt,policies, crisis in developed countries or any other reasons.

lNewspaper clippings to reflect the changes of share price.

ECONOMICS

Prepare a project report on consumer awareness by taking any one of the followingproducts:-

(a) Electronics

(b) Cosmetics

(c) Ready made garments

(d) Packed Food

After selecting the product, prepare a project report, considering the following points:-

(i) Draft a questionnaire to collect primary data from the households (which includeschildren, Middle Aged people & old aged people)

(ii) Collect the data with the help of Questionaire

(iii)Classify & present the data through appropriate tables, diagrams & graphs Analyzeand interpret the data & draw conclusion.

ACCOUNTS

Q . Make a project file

(a) Paste all the necessary Banking documents , pay in slips, Requisition slip, cheques,demand draft, Account opening form, know tour client form, locker opening form

(b) Take any one Public or Pvt. Company and give a brief introduction about thatcompany. Paste the Trading and P/L, balance Sheet of co.

Write the brief Intrepretation about the financial position of company.

ENTREPRENEURSHIP

Students have to visit an enterprise. With the help of a schedule/questionnaire the studentswill record observations regarding

lBackground of entrepreneur

lReasons for selecting entrepreneurial career,

lStarting the enterprise

lType of enterprise

lProcess of setting enterprise,

lProducts/services, Investment made

lMarketing practices followed

lProfit/loss

lProblems faced

lPublications in Newspapers/Magazines

lAny other relevant Information.

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HISTORY

Q-1 Prepare a project report 15-20 pages, on any one of the following topics:-

1. Evolution of man

2. Industrial revolution

3. Changing cultural Traditions

4. Roman Empire

5. Displacing Indigenous peoples

Q-2 Go through the Chapter An Empire Across three continents carefully and pick outsome basic features of Roman Society and economy which you think make it lookquite modern.

OR

How were Islamic architectural forms different from those of the Roman Empire?

(Chapter- The Central Islamic lands)

POLITICAL SCIENCE

Q-1 Prepare a project report 15-20 pages, on any one of the following topics:-

1. Free and fair elections in India

2. Development in Democratic regions

3. Indian Judicial system

4. Peace and cooperation- India's Endeavours

5. Twelfth five year plan

Q-2 Read the newspaper and collect news that can be quoted as examples for further

reference under the following headings:-1. Global Environmental Issues

2. Democracy at stake in India

3. FDI (Foreign Direct Investment)

4. Fundamental of Democracy equality, liberty, justice, secularism, socialism(global and Indian prospective)

5. Demand of regional Autonomy by various states.

6. Amendments in the constitution

7. Women reservation in parliament

BIOTECHNOLOGYMake a model on any topic related to BIOTECHNOLOGY and submit after summervacations.

FASHION STUDIES

Q1. Collect various types of fabrics and present them in a leaf file along with the followingdetails:

a) Name of the fabric swatch.

b) Price per meter.

c) Composition (cotton, silk, synthetic, etc.)

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Q2. A detailed forecast of various trends as predicted by validated sources for theAutumn Winter 2014 as well as Spring Summer 2013..

Q3. A research and an insight of various arts and crafts prevalent in the various states(parts) of the country as well as the World.

Q4. Choose any one culture and give an overview on its costumes and their evolution.

Q5. Future prospects of the Fashion Industry career options, job opportunities,etc.

Q6. A pictorial representation of the various terms and concepts dealt in the class.

Q7. A project on Design a term

+

All the elements and principles of design.-Unit 3 & U-1

MEDIA STUDIES

1. Give a detailed Review on I.P.L (2013)2. Critically analyze two film of any one director

3. Make a photo feature on the topic 'COLOURS OF INDIA'

4. Prepare a poster on 'WORLD POPULATION DAY'.

PAINTING

20 Sketches from life A-4 size sheet

Full handmade sheet

Save environment

Or

Peace and unity

SCULPTURE

10 Sketches 5 still life 5 outdoor sketch

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