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D.A.V Public School

Vasant KunjHOLIDAY HOMEWORKCLASS XI (Science)ENGLISH

Prepare a Project file on:

The Long Reading Text- UP FROM SLAVERY by Booker T. Washington in a form of

Presentation under the following headings (around 14-16 pages-both sides, A4 colored

sheets)

1)Cover Page2)Synopsis of the novel3)Character sketch of each major character4)Exploring the various themes of the novel5) An Article on The Status of Slaves in South Africa at the time of Washington

(Support your inputs with relevant pictures and data)

Mathematics

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Q.No4.A survey of 500 television viewers, produced the following information; 285 watch

football, 195 watch hockey, 115 watch basketball, 45 watch football and basketball, 70

watch football and hockey, 50 watch hockey and basketball, 50 do not watch any thre

games. How many watch all the three games? How many watch exactly one of the thre

games?

Q.No5.In a group of 50 students , the number of students playing Hockey, Cricket & Footba

were found to be as follows :

Cricket : 17 Football : 13

Hockey : 15 Cricket & Football : 9Hockey & Football : 4 Cricket & Hockey : 5

Hockey , Cricket & Football : 3

Find the number of students who play :

(I) Cricket only (iii) Football only(II) Hockey only (iv) Cricket & Football but not Hockey(V) Football & Hockey but not Cricket

(VI) Hockey and Cricket but not Football

(VII) At least one of the three games (VIII) None of the three games.

Q.No6. In a survey it was found that 21 people liked product A, 26 liked product B and 2

liked product C. If 14 people liked products A and B, 12 people liked products Cand A, 14 people liked products B and C and 8 liked all the three products. Find

how many liked product C only.

Q.No7. In an university, out of 100 students 15 offered Mathematics only; 12 offered statistic

only; 8 offered only Physics; 40 offered Physics and Mathematics; 20 offered Physic

and Statistics; 10 offered Mathematics and Statistics, 65 offered Physics. Find th

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number of students who (i) Offered Mathematics (ii) Offered Statistics (iii) Did no

offer any of the above three subjects.

Q.No8.A survey of 500 television viewers, produced the following information; 285 watc

football, 195 watch hockey, 115 watch basketball, 45 watch football and basketball, 70

watch football and hockey, 50 watch hockey and basketball, 50 do not watch any thre

games. How many watch all the three games? How many watch exactly one of the thregames?

Physics

Q1) Theory and experiments go hand in hand in physics and help each other

progress. Give two suitable examples in support of your answer.

Q2) Explain the relation of physics with other field of sciences.

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Q3) Write and explain the scientific principles behind the given importan

technologies:

a) Computerb)

Laserc) Rocket

d) Aeroplanee) Optical fibref) Electric generatorQ4) Write the name of the five Indian physicists and explain their contribution.

Q5) Name the scientist who received Nobel Prize twice in physics. Explain hi

discovery/contribution.

Q6) Match the scientists name against discovery:

Scientist Discovery

a)Faraday a) Law of gravitationb)Rutherford b) Quantum model of Hydrogen atomc)Chadwick c) Unification of light ad electromagnetismd)Bohr d) Theory of relativitye)Newton e) Inelastic scattering of light by moleculesf)Salam f) Unification of weak and strong electromagnetic inductiog)Einstein g) Expansion of the universeh)Raman h) Neutroni)Maxwell i) Law of electromagnetic induction

j)Hubble j) Nuclear model of the atomQ7) In the expression P = E l

2m

-5G

-2:

E, m, l and G denote energy, mass, angular momentum and gravitationa

constant, respectively. Show that (P) is a dimension less quantity.

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Q8) Explain the systematic, gross and random error with example. State the genera

rule for evaluating the errors in a combined calculation.

Q9) Write the dimensional formula of:

a) Plancks Constantb) Universal gas constantc) Gravitational constantd) Resistancee) Boltzmanns constantf) Stefans constantQ10) Derive dimensionally the relation : S = ut + at

2

.Chemistry

Q1 Revise and prepare the following chapters for the cycle test.- Some Basic Concepts in Chemistry and Atomic structure.

Q2 Read chapter- Environmental Chemistry from Chemistry part-2 and

answer all the questions of NCERT exercise in your class work note book.

Q3 Do the assignment on chapterSome basic concepts in Chemistry which is

given below.

Q4 Search the net and download videos on any one of the topics of your Chemistry

syllabus.

SOME BASIC CONCEPTS OF CHEMISTRY

Q1. What is the difference between 3.0g and 3.00g?

Q2. Which of the following has maximum no. of significant figures?

(i) 0.00453 (ii) 4.8046 (iii) 5.643

Q3. A metal forms two oxides. The higher oxide contains 80% metal. 0.72g of the

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27g (iii) 5g)

Q.14 What is the difference between the mass of a molecule and molecular mass?

Q15.How many molecules of CO2 are present in one litre of air containing 0.03%volume of CO2 at NTP?

Q16. Calculate the Vol. at NTP occupied by

(i) 14g of Nitrogen gas (ii) 1.5g moles of Co2 (iii) 1021

molecules of O2

Ans:- (i) 11.2 L (ii) 33.6 L (iii) 3702mL)

Q17. Why is the value of Avogadro Number 6.023X1023

and not any other value?

Biology

1.Classifybacteria on the basis of their shapes.

2.What are plasmids? How are they used in biotechnology?

3.Give reasons for:i)Number of mitochondria is very high in cardiac muscle cells.

ii)Vacuoles in Amoeba are known as contractile vacuoles

iii)Ribosomes inside mitochondria resemble those found in a prokaryotic cell.

iv)cis face of golgi usually lies close to ER

4.With the help of diagrams explain the sequence of changes taking place during

meiosis I in an animal cell.

5.What structural and functional characteristics do cilia, flagella and centrioles hav

in common?

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6. Explain the fluid mosaic model of the plasma membrane, with the help of

labeled diagram.

7. The genomic content of a species is constant whereas the extra chromosoma

DNA is found to be variable in different members of a population.Explain.

8. Elucidate the structure and function of the following cell organelles:

Nucleus Mitochondria Chloroplast Flagellum

9. Comment upon the location and function of the following:

PlasmidsPolyribosomes Mesosomes Fimbriae

10. Distinguish between:

i) Plant and animal cell

ii) Prokaryotic and Eukaryotic cell

II.Search the net and download videos showing various cell organelles in action.

III. Write an essay of about 500 words on any one of the following:

i)Biotechnology---the only solution to mans problems of food , health and

pollution.

ii)Career options for biologists.beyond medicine

Computer Science

Q1. Convert the following decimal numbers to binary numbers:

(a)143 (b) 35.38 (c) 686.54 (d) 1005.11 (e)6567Q2. Convert the following decimal numbers to octal numbers:

(a)246 (b) 135.78 (c) 786.54 (d) 10055.76 (e)4567Q3. Convert the following decimal numbers to hexadecimal numbers:

(a)143 (b) 35.38 (c) 686.54 (d) 1005.11 (e)6567Q4. Convert the following binary numbers to decimal numbers:

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(a)10110011 (b) 1011000111.1101 (c) 11101.101 (d) 1111000.001

(e)110.1111

Q5. Convert the following binary numbers to octal numbers:

(a)1110011 (b) 1011000111.1101 (c) 10101.101 (d) 111000.001 (e)10.1111Q6. Convert the following binary numbers to hexadecimal numbers:

(a)110011011 (b) 100100111.1101 (c) 1101.101 (d) 110100.001 (e)1010.1111Q7. Convert the following octal numbers to hexadecimal numbers:

(a)237 (b)354 (c) 241.63 (d)113.3 (e)664Q8. Convert the following hexadecimal numbers to octal numbers:

(a)B24 (b) 1BB5.78 (c) CB86.C4 (d) 1687A.76 (e)EF78Q9. Write features and application of following Antivirus Softwares:

1. Avast! Free Antivirus 8.0.14892. Avira Free Antivirus 20133. Norton Antivirus 20.1.0.244. ESET NOD32 Antivirus5. Kaspersky Anti-Virus6. Panda Antivirus 20137. Panda Cloud Antivirus8. Malwarebytes Anti-Malware

Q10. Compare the features of following Processors(CPU).1. Intel Core i32. Intel Core i53. Intel Core i7

http://avast.en.softonic.com/http://avira-free-antivirus.en.softonic.com/http://norton-antivirus.en.softonic.com/http://eset-nod32-antivirus.en.softonic.com/http://kaspersky-anti-virus-2012.en.softonic.com/http://panda-antivirus.en.softonic.com/http://panda-cloud-antivirus.en.softonic.com/http://malwarebytes-anti-malware.en.softonic.com/http://malwarebytes-anti-malware.en.softonic.com/http://www.computershopper.com/components/reviews/intel-core-i5-2500khttp://www.computershopper.com/components/reviews/intel-core-i5-2500khttp://www.computershopper.com/components/reviews/intel-core-i7-2600khttp://www.computershopper.com/components/reviews/intel-core-i7-2600khttp://www.computershopper.com/components/reviews/intel-core-i7-2600khttp://www.computershopper.com/components/reviews/intel-core-i5-2500khttp://malwarebytes-anti-malware.en.softonic.com/http://panda-cloud-antivirus.en.softonic.com/http://panda-antivirus.en.softonic.com/http://kaspersky-anti-virus-2012.en.softonic.com/http://eset-nod32-antivirus.en.softonic.com/http://norton-antivirus.en.softonic.com/http://avira-free-antivirus.en.softonic.com/http://avast.en.softonic.com/