ST. THOMAS’ SCHOOL,
Goyala Vihar, Near Sec-19, Dwarka
Session 2013-14
HOLIDAY HOME WORK (CLASS –XII)
Dear Students,
Vacations are seen as an antidote to work. They are medicine, a remedy for counteracting the effects of
labour and also to rediscover ourselves. This time we have decided to give you something to take home to
think besides home work. So get on track for a productive holiday break whilst ensuring that you have
more than enough time for rest & relaxation. Submit the work on1th July 2013 positively.
ENGLISH
Complete the worksheets provided to you. Make relevant notes using suitable abbreviations. Do provide
the key for the same. Record your answers in the notebook neatly and legibly.
MATHS
1. Find the value of x and y if
=
.
2. Find the values of x, y, z and t when the following matrices are equal.
and
3. If
A=
.
=, B = =
,C = =
Verify that (A + B) C = AC + BC
4. If A =
,I=
, then find K, so that A² = 8A + K I.
5. For the following matrices A and B, verify that (AB)ꞌ = BꞌAꞌ if
A =
, B = [ -1 2 1]
, Verify that A² - 4A – 5I = 0.
6. If A = =
7. If A =
, Show that A – At is a skew symmetric matrix, where At is the transpose of matrix
A.
8. If A =
9.
, Show that (a I + b A)³ = a³ I + 3a² b A.
Find the inverse of the matrices , if it exists, using elementary operations
(1)
(2)
(3)
(4)
(5)
(6)
10. Write the value of
.
11. If A is a square matrix of order 3 such that │A│ = α, then write the value of │-A│.
12. Evaluate
.
13. Write the value of the following determinant
14. Show that
= 0, where a,b,c are in A.P.
.
15. Prove that
= 2 ( a + b + c)³.
16. Using properties of determinants. Prove that
= 3 (a + b + c) ( ab + bc + ca)
17. Prove that
= 2 ( 3abc - a³ - b³ - c³).
18. Using matrices solve the following system of equations
2x – 3y + 5z = 11
3x + 2y – 4z = -5
x + y – 2z = -3
19. If a, b, c are all positive and are the pth, qth , rth terms of G.P. then prove that
= 0.
20. Compute A -1 for the matrix A =
. Hence solve the following system of equations
y + 2z + 8 = 0
x + 2y + 3z + 14 = 0
3x+y+z+8=0
21. If A =
and B =
. Find AB and Hence solve the system of
equations
2x - y + z = -1
-x + 2y – z = 4
x – y + 2z = -3
22. Find A -1 , A =
x+ 2y + z = 4
-x + y + z = 0
x– 3y + z = 2
. Hence solve the following system of equations
SOCIAL SCIENCE
History
Instructions:
1.
2.
3.
4.
5.
Project has to be done on A4 size sheet and should be handwritten.
First page of the project should have – Name, class, and Roll No and title of project
Second page of the project should have Index
Third page should have acknowledgement i.e, thanking people who helped you in making your project.
Last page must have Bibliography: sources of Information.
Topics:1. Harappan seals.
2. Citadel
3. Great bath
4. Drainage system
5. Socio economic differences at Harappa.
6. Trade Inland and distant.
7. Craft Production.
8. Scripts and weights.
9. Decline of civilisation.
10. Mohenjadaro as Ancient urban city.
Following questions has to be included while writing your project. You can paste pictures, add map, add
questionnaire, Write historical background and relevant information for every topic etc. Every topic
should have your own inferences and conclusion at the end.
Harappan Seals.






What is the importance of seals in the ancient times?
What are they made of?
Can you find out about people who made seals?
Compare Harappan seals with Mesopatamian seals.
Write about various signs and motifs made on the seals.
Imagine yourself as a seal maker of Harappa and write a day in your life.
Citadel

What is the importance of such a structure in a civilized society?
 Who would plan the making of citadel?
 Who would do division of labour?
 Do you see similar structures of social segregation in modern Delhi planning?
 If you were a member then write about a day of your life?
Great Bath

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
Location of Great Bath( locate on map)
Measurement, Details of shape, no of rooms etc.
Materials used to built it?
Who would have build and how much time it might have taken to construct the whole Structure.
What purpose did the great bath served?
Write about the sanitation facility in Great Bath around?
Think that you are a worker who had built the great bath share your experience, hardships that you
faced while building this structure.
Drainage system


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What does the drainage system of Harappan civilisation tells us.
What do you think the drains were planned prior or the cities were planned and drains were laid?
What is so special about drainage system of Harappa?
Give example and explain the drainage system in big structure as well as residential area?
Imagine that you an officer from public work department of Delhi, you have been assigned a task
to compare the drainage system of Indus valley civilisation and present day Delhi. Write about the
positive and negative side of your present day drainage system.
Socio- Economic differences at Harappa





What do you mean by Socio-economic differences?
What are the archaeological evidences found by the Archaeologist which suggests that there
existed socio-economic differences during that time.
Write in details about what each item suggest about the differences.
What does burial tells us about?
Was there any difference between the status of a men and women?
Trade inland and distant
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

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What were the Commodities that were traded.
Explain with whom they had trading relation in Inland and distant lands.
Write about various items that the Archaeologist have found which suggest that Harappa had
trading relation with other civilizations.
Significance of seals in trading, for what seal was used?
Mode of transport that were used to send goods or import goods.
It would be right to believe that the trading system lead to the development of standard weight
system?
Suppose that you are a trader from Harappan civilisation write a days in your life.
Craft production

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

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Which all items were produced? What all items were discovered by archaeologist from various
sites?
What were the different stages involved in craft production?
Write about different centres of craft production.
In order to make certain crafts they needed raw materials from where they got these raw materials.
Once they produced certain craft what happened to it?
What kind of tools they used for this.
Labours or craftsmen who were involved in this process were skilled people? Were they native or
people who came from distant land?
List the material used to make beads in the Harappan civilisation .Describe the process by which
any one kind of bead was made.
Imagine that you are a skilled craftsmen write about a day in your life during ancient period.
Scripts and weights





What does script and weights suggest about the civilisation.
What was the bad part of Harappan Script.
The precise system of weights were made by which material?
How did the weight system worked what was the measuring unit?
Weights suggest what about the exchange system of Harappa?
Decline of civilisation



What do the ruins at the Harappan civilisation suggest?
What are various reasons given by Historians and Archaeologist about the decline of civilisation.
According to you which is the most acceptable one? Why do you feel so? Justify.
Mohenjadaro as Ancient urban city.
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What is urbanism and urbanisation.
What all things make a place urban.
Why will you call Mohenjadaro urban city or centre.
Write about any other city which was an urban centre in Indus valley civilisation.
Explain the life style culture habit of people living in this centre
Include factors like trade, craft production, planned city, drainage , Great bath all make
Maohenjadaro an urban city.
Sources that could be used for completing your project
1) Compulsory visit to National Museum, janpath (Harappa civilisation section).
2) Books:
1. Raymond and Bridget Allchin.1997. Origins of Civilization. Viking, New Delhi
2. G.LPossehl. 2003. The Indus Civilization.Vistaar, New Delhi.
3. ShereenRatnagar. 2001. Understanding Harappa.Tulika, New Delhi.
4. T.V Padma. 2004. The Forbidden Temple.Tulika, New Delhi.
5. A.L Basham. 2004. The Wonder that was India, Third Revised Edition.Picador India, London.
6. Upinder Singh. 2002. Mysteries of the Past-Archaeological Sites in India. National Book
Trust,India, New Delhi
3) Internet:1. www.harappa.com/har/harreso.html
2. www.ancientcivilizations.co.uk/home_set.html
3. http://en.wikipedia.org/wiki/Indus_Valley_Civilization
4. www.thenagain.info/webchron/india/harappa.html
Geography
A. On the basis of Census of India 2011 data collection; collect the information related to:
1. State wise population and plot it on the political map of India.
2. Components of Population i.e. Birth rate, Death rate and Migration (Immigration and
Emigration)
3. Population composition i.e. Sex Composition, Age structure, Rural Urban Composition,
Literacy and Occupational Structure.
B. Compile the data in tabular format and draw the:
1. Comparative bar diagram of Birth and Death Rate.
2. Bar Diagram of state wise Sex composition (top five, middle five and lowest five state of
India)
3. Comparative bar diagram of Rural and Urban Composition.
4. Histogram of Literacy rate and Occupational Structure.
C. Interpretation and Conclusion of each data is necessary.
D. Instruction:
i.
ii.
iii.
iv.
Project to be done on A4 size sheets and should be handwritten.
First page must have--Name, Class, and Roll. No. and Title of the project.
Second page should have Index.
Third page should be of Acknowledgement, i.e., thanking people who helped you in making your
project.
v. Last page must have Bibliography: sources of information.
POL SCIENCE
Cover all the news and reports related to these political leaders (speeches, travels, views on various
political issues) and make a portfolio in a file.
TOPIC
ROLL NO.
Sushma Swaraj(leader of opposition in Lok sabha)
1
Narendra Modi(Chief minister of Gujrat)
2
Rahul Gandhi( Deputy Chairperson of Congress)
3
Lal Krishna Advani(Ex Deputy Prime Minister of India and senior leader of B.J.P)
4
Sushil Kumar Shinde(Home Minister of India)
5
K.Karunanidhi(Ex Chief Minister of Tamil Nadu)
6
Mulayam Singh Yadav(Leader of Samajwadi Party and supporter of UPA II)
7
Mamta Banerjee(Chief Minister of Bengal)
8
Nitish Kumar(Chief Minister of Bihar)
9
Meera Kumar(Speaker of Lok Sabha)
10
SCIENCE
Physics
Do total 25 numericals based on each topic of the chapter – Electric charges and field.
Derivations:


Find out the electrical field and axial point and an equatorial point of a dipole, separately.
Applicatons of Gauss’ law: i.e. find out electrical field due to and infinitely long straight charged
wire, due to a charged infinite plane sheet and due to a uniformely charged thin spherical shell
(both outside & inside the shell)
Note: Do the above work on A-4 size sheet to make a folder of it.

Complete you assignement sheet given.
Chemistry
Directions::
 Students have to prepare one project report from the following topics according to their roll
numbers indicated in front of the topic.
 Project should cover -aim of the project, contents, introduction, theory, procedure, precautions,
observation table
 Project should be hand written and not typed.
Project Topics
1)
Chemistry Project on Determination of Contents of Cold Drinks
(RN 1, 13&25)
2)
Chemistry Project on Preparation of Potash Alum
(RN 2 & 14)
3)
Chemistry Project to To Determine which Antacid Neutralizes Stomach Acid Most
(RN 3 & 15)
4)
Chemistry Project to Study the Quantity of Caesin in Milk
(RN4& 16)
5)
6)
Chemistry Project to Determine the Caffeine in Tea Sample
Chemistry Project on Presence of Insecticides & Pesticides in Fruits & Vegetables
(RN 5&17)
(RN6&18)
7)
8)
Chemistry Project on Preparation of Soyabean Milk
Chemistry Project on Metal coupling in rusting of Iron
(RN 7 &19)
(RN 8 &20)
9) Chemistry Project on Preparation of Pigments and Poster Paints
10) )Chemistry Project on Study of Diffusion of solids in Liquid
11) Chemistry Project to Measure the Amount of Acetic Acid in Vinegar
Chemistry Project on Evaporation of Liquids
(RN9 &21)
(RN10&22)
(RN 11&23)
(RN12&24)
Biology
Please remember always, “Science operates on the edge is of what is known…to discover more what is
not……we have to be a person of what we can do to explore being young scientists…….
So, now let me tell you the meaning of research projects:
Investigatory projects are meant to be a pleasure-cum-work-cum-knowledge gathering exercise of senior
students of you all. You can increase your knowledge of world around you by listening to others, reading
books, watching scientific television channels and surfing the internet……………However, one of the
most exciting ways of increasing your knowledge is to put on the shoes of the scientists and conduct your
own experimental investigations……………….
Prepare an investigatory project on any topic related to biology.
Here are some guidelines for the same:
 Select a topic in biology which has made you curious and put on your investigation cap.
 Which aspect of the topic do you want to investigate?
 Do some research and design an appropriate experiment for the same.
 Collect the data and record it in the given format
 Aim
 Why I selected this project
 Background investigation-Theory
 Experiment
 Data collected
 Result
 My conclusion
 Bibliography

Refer to the following sites for further information on how to carry out an investigatory project
www.investigatoryprojectexample.com/microbiology
www.scienceprojest.com/projects/index/senior/biology.asp
COMPUTER
1. Define the following terms:
a.Tokens
b. Keywords
c. Identifiers
d. Literals
e. Integer constant
f. Array
g. Functions
h. Pointers
i. References
j. Constants
k. Classes
l. Structures
m. Unions
n. Enumerations
o.Operators
p. Expression
q. Relational operators r. Logical operators s. Arithmetic operator
t. Conditional operator u. The compile sizeof operator
v. Arithmetic Expression
w. Type Conversion & its type. x. Iteration statements
y. Sequence statements
2. Write the syntax of the following statements:
a. If statement
e. If else
b. If else-if
f. For loop
c. While loop
g. Do while loop
d. Switch case
3. Define the various Jump statements with syntax:
a. Goto
b. Break
c. Continue
4. Write the function to generate random numbers.
5. Why do we use string functions?
6. What do you mean by vector?
7. Mention & explain the functions of the types of Arrays.
8. Define function
9. Explain the recursion method with the help of an example.
10. Define the term structure.
11. Explain the method of - passing structures to Functions.
12. Do Unsolved Problems of Chapter No. 13 from Q-1 to Q-19 on page 708-709.
ACCOUNTANCY
1.
Do all the questions of fundamental of partnership i.e. Q. No. 8 to Q. No. 76.
2.
Do all the questions of Valuation of Goodwill i.e. Chapter-2.
BUSINES STUDIES
PRESENTATION AND SUBMISSION OF PROJECT REPORT
Following essentials are required to be fulfilled for its preparation and submission.
1.
2.
3.
4.
5.
6.
The total length of the project will be of 25 to 30 pages.
The project may be handwritten/ print out.
The project will be presented in a neat folder.
The project will be evaluated on the basis of the following heads:
a. Initiative
1 Mark
b. Creativity in presentation
1 Mark
c. Content, observation and research work
2 Marks
d. Analysis of situations
2 Marks
e. Submission on time
2 Marks
f. Viva
2 Marks
th
Final date of submission of the project- 15 July’ 2013
The project report will be developed in the following sequencea. Cover page should include School name with logo (on the top centre) and
 Student information – Name, Class, C.B.S.E. Roll No, and Year (at the bottom centre).
b. Next page should be the title of the project.
c. List of contents
d. Acknowledgements and preface (acknowledging the institution, the news papers read, T.V.
channels viewed, places visited and persons who have helped).
e. Introduction of the topic/ case study/ project
f. Detailed contents with suitable heading
g. Planning and activities done during the project, if any
h. Observations and findings while conducting the project
i. News paper/ Magazine clippings
j. Photographs (if any).
k. Conclusions (summarized suggestions or findings, future scope of study)
l. Appendix (if needed)
m. Teacher’s Report
TOPICS: (Any one)
Project ONE: ELEMENTS OF BUSINESS ENVIRONMENT
Project TWO: PRINCIPLES OF MANAGEMENT
Project THREE: MARKETING MANAGEMENT
http://www.cbseacademic.in/web_material/Circulars/2012/Circular_Business_studies_Project_9_2012.pdf