holiday homework xiia_2016

8/16/2019 Holiday Homework XIIA_2016

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HOLIDAY HOMEWORK

CLASS XII-A

2016 – 2017

SUBJECT-CHEMISTRY

1. Prepare one investigatory project.

The project report to be written as follows:

Title Page – This is the first page carry the following information

(i) Title / Aim of the project

(ii) Name of the student with class and section

Table of contents – This page records the content of the project report

preferably with corresponding page numbers.

Introduction and review – This provides a brief history of the project

including chronological order of previous work done in this direction.

Experimental – This section should include the following information:

(i) Apparatus /equipment

(ii) Procedure /experimental methodology

(iii) Data / observation (with proper units of all the quantities

(iv) Calculations (use the correct formulae for the calculations

(v) Graphs / diagrams / charts

(vi) Result and conclusion

Bibliography – On this page a list of books, periodicals, review article,

research work (if any) related to the present work is to be reported.

2. Learn the conceptual questions of the chapters taught in the class.


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SUBJECT-PHYSICS

Complete writing part of practical file and Project

SUBJECT-BIOLOGY

1. Prepare For Assessment Test

2. Prepare a Project as Explained in class

SUBJECT-MWT

1) Worksheet sent on their email ids2) Prepare website for the project

SUBJECT-C.Sc.

Worksheets posted on their email ids

SUBJECT-PHYSICAL EDUCATION

Collect the BMI of 10 studentsMention the benefits of Swiss Ball

Mention the benefits of plyometric exercises

SUBJECT-HOME SCIENCE

Project1. Spend a day with an elderly person (at home/old age home) and observe theirneeds and problems.Write a report.

Survey

1. Visit any one place (home/restaurant/business Centre/school) and observe itsmeasure for safe drinking water and general condition of hygiene.2. List four - five areas of agreement and disagreement that you have with

mother,father,siblings,friends and teachers.


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Q3. If y = x

x 1 , Prove that

022 xydx

d x

.

Q4. If y = Sin (log x) + Cos (log x), Prove that x2y“+xy’+ y=0

Q5. Find 2

2

dx

yd if x = 2Sin (t), y = 3Cos (2t).

Q6. If x y = y x finddx

dy.

Q7. Differentiate the following w.r.t. x:(i) (Sin x) x (ii) x Sin-1x (iii) x log x + (log x) x

(iv) Sin-1(ex) (v)

2

1

1 x

xSin (vi) log (xx + cosec2x)

Q8. Differentiate using subst itution:

(i)

x

x

Co 2

1

sec

21

(ii)

22

1

a x

x

Sin

(ii) x xCot 21 1 (iv) 21 12 x xCos Q9. Differentiate w.r.t. x:

(i)

2

1 CosxSinxSin (ii)

5

431 SinxCosxCos

Q10. Differentiate

2

1

1

2

x

xSin w.r.t. tan-1x.

Q11. Differentiate

2

1

1

1

t

Cos w.r.t. tan-1

2

1 t

t .

Q12. For what value of ‘k’ is the function f(x) continuous at x = 2?

f (x) =

5;13

2;

2;12

x x

xk

x x

Q13. Differentiate w.r.t. x:

x x

x x

11

11tan 1

Q14. Find the slope of tangent at x =4

to the curve: x = Sin t , y = Cos 3t.

Q15. If y =

x

x

x x

11log1

22 , Prove that

x

x

dx

dy 12 .

Q16. Finddx

dy when x3+24 xy+y3 = 8.

Q17. If x cos y + x3 = tan-1x, finddx

dy.


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Q18. If 011 x y y x , Show thatdx

dy= - (1+x)-2.

Q19. If y =

.....

1

1

x x

x , Prove that x y

y

dx

dy

2

.

Q20. If y = (Sin-1x) 2, Prove that (1-x2) 22

2

dx

dy x

dx

yd .

Q21. Differentiate the following w.r.t.x

1. x3 / (x2-2x+1) 2. e3.log x (x4 +1)-1 3. (sinx +cosx)/(16 +9sin2x) 4. log(sinx) 5. cos2x. 6. [(2+sin 2x)/(1+cos2x)] ex

7. x4 / (x2-2x+1) 8. (x-x2+3)9. e-x.sin2x 10. (x+e2x)11. cos4x sin3x 12. x.log(x4)

Q22. Find the derivative of (2x+1)/(2-3x) w.r.t.x.

Q23. find d2y/dx2, If x = a.sin(t) +cos(t) and y= a.cos(t)

Q24. Find the derivative of (sinx) x + xsinx w.r.t.x.

Q25. Find the derivative of tan(x )w.r.t.x.

Q26. If x = sin and y = a cos, find d2y/dx2

Q27. Evaluate lim. 1-sinx – 5(-2x)2

x

/2 (

-2x)2

Q28. Find the values of a and b for which the following function is continuous atx=2:

3ax+b if x>2f(x) = 10 if x=2

5ax-2b if x


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(Inverse Trigonometric functions)

1 Mark Questions:

Q1. Find the value of tan (cos –14/5 + tan –12/3)

Q2. If we consider only the Principal value of the inverse trigonometric functions, then find the

value of tan

Q3. If then find x.

Q4. If (a < 0)and x ( – a, a), simplify tan –1

Q5. then the value of

Q6. Find The value of

Q7. If find the value of .

Q8. Find the principal value of

Q9. If then what will be the range of y?

Q10. Show that

Q11. Find the value of



Q14. Express in terms of Sine and cosine


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Q15. Write down the domain and Range of

4 Marks Questions

Q1. Solve of the equation tan –1(x – 1) + tan –1x + tan –1(x + 1) = tan –1(3x)

Q2. Solve of the equation


Q4. , then find the value of x

Q5. Evaluate

Q6. Find the value of at x =

Q7. What is the +ve integral solution of ?

Q8. Find value of

Q9. , then find whether α >β

Q10. then solve for x.

Q11. Find the value of x satisfying the equation

Q12. Find the solution of equation

Q13. Write the Simplified form of

Q14. Evaluate


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6 Marks Questions

Q1. Express in the simplest form

Q2. Prove that

Q3. Solve

Q4. Show that

Q5. Find the value of:

Q6. Prove that 2 tan-1{tanα/2tan(π/4-β/2)}= tan-1{sin αcos β/(sin β+ cos α}

Answers (1 Mark) :

(1) 17/6 (2) 3/29 (3) (4) (5) (6)

(8) /6 (9) – π/2 ≤y ≤ π/2 (11) π/6 (12) tan-1 ½ (13) 3 tan -1 x/a

Answers (4 Mark) :

(1) x=0 (2) -1/12 (3) 14/15 (4) (5) (6)

(7) for x = 1, y = 2 and for x = 2, y = 7 (8) (9) (10) x=0 (11) x=2

(12) (13) (14) 0 (15)

Answers (6 Mark) :

(1) (x/2 +π/4) (2) x=1/6 (3) (x+y)/(1-xy)


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6. State the law of demand.

7. Define price elasticity of demand.

8. State the various degrees of elasticity of demand

9. Derive market demand schedule from individual demand schedules, assuming a market with 3

consumers X, Y, Z.

10. When price of a commodity rises from 5 to 10, demand falls from 200 to 120 units.

Find Ed by percentage method.

11. Ed is (-) 0.8 and the initial quantity demanded is 30 units. If change in price by Rs 1 causes 10%

change in demand. Find the original price at which the commodity was being sold.

12. State the law of diminishing marginal utility.

13. State the factor influencing elasticity of demand

14. Explain consumer equilibrium under utility approach. Use diagram.

15. Explain consumer equilibrium under indifference curve analysis. Use diagram.

EXERCISE III: Producer Behaviour and Supply

1. Define the following:

I.

Production

II.

Production function

III.

Law of diminishing returns

IV.

Opportunity cost

V.

Marginal cost

VI.

Total revenue

VII.

Marginal revenue

VIII.

Average revenue

IX.

Supply

X.

Supply Function

XI.

Supply schedule

XII.

Market Supply Curve

2. State Law of Variable Proportions/ Returns to a variable factor.

3. State Law of supply.

4. List the factors affecting market supply of a commodity.

5. State the condition of producer equilibrium under MR-MC approach.


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6. Explain the relationships between the following:

i)

Total Product and Marginal Product ii) Average Cost and Marginal Cost

iii)

Average Revenue and Marginal Revenue iv) Total cost and Marginal Cost

7. Distinguish between the following:

a) Fixed Cost and Variable Cost.

b) Increasing Returns to Factor and Diminishing Returns to Factor.

c) Change in Quantity Supplied and Change in Supply.

d) Expansion in Supply and Increase in Supply.

e) Contraction in Supply and Decrease in Supply.

SUBJECT-PSYCHOLOGY

CASE STUDY

The main objective of preparing a case profile is to understand the individual in

totality. Prepare a case profile of the individual using the proposed format as given

below.

Find out the background information and developmental history of the

individual.

Identify the method of inquiry, i.e. interview or observation that you would like

to undertake to get complete information of the case.

Administer the psychological tests.

A case profile is to be prepared based on the suggested format.

Reflect on the causes to draw some preliminary conclusions.

1. Introduction

• A brief introduction of about one or two pages presenting the nature of the problem,

its incidence, likely causes, and possible counselling outcomes.

• A half page (brief) summary of the case.


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2. Identification of Data

• Name (may be fictitious)

• Diagnosed Problem

• Voluntary or Referral (i.e., by whom referred — such as teacher, parent, sibling, etc.)

3. Case History

• A paragraph giving age, gender, school attended, class (grade) presently enrolled in,

etc.

• Inf ormation about socio-economic status (SES) consisting of information about

mother’s/father’s education and occupation, family income, house type, number of

members in the family — brothers, sisters and their birth order, adjustment in the

family, etc.

• Inf ormation about physical health, physical characteristics (e.g., height and weight),

any disability/illness (in the past and present), etc.

• Any professional help taken (past and present), giving a brief history of the problem,

attitude towards counselling (indicating the motivation to seek help, etc.).

• Recording signs (i.e., what is observed in terms of facial expressions, mannerisms,

etc.) and symptoms (i.e., what the subject reports, for example, fears, worry, tension,

sleeplessness, etc.).

5. Administration of Psychological Tests.

a) David’s Battery of Differential Abilities (DBDA)

b) Maudsley Personality Inventory (MPI)

c) 16 Personality Factor (16PF)

d) State and Trait Anxiety Test (STAT)

e) PGI Wellbeing Measure

4. Concluding Comments


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SUBJECT-ENGLISH

NOTICE WRITING

1.

Due to a sudden landslide and unfavourable weather, St. Francis School. Vasco has to be closed

for a week. As the principal of that school, draft a notice in not more than 50 words to be

displayed at the school main gate notice board.2.

You are Secretary of Gymkhana Club, Madurai. Write a notice in not more than 50 words

informing the members to attend an extraordinary meeting of the governing body. Include

details like date, time venue, etc sign as Prabhu / Pratibha.

ADVERTISEMENTS

1.

Draft an advertisement announcing the launch of special health drink by Health Care Private

Ltd., highlighting its nutritive value.

2.

You are working for an advertising agency. Draft an attractive advertisement for the company

called Modern Machines which is launching washing machines.

3.

You have recently started a Yoga Centre for school children. Draft an advertisement to be

published in a local daily about it, giving all relevant details.

4.

You are Harish of No. 10 , Kailash Ganj Lucknow. Draft an advertisement to be published in the

daily ‘The Hindustan Times’, under classified columns to dispose off your car as you are going

abroad.

5.

You have recently started a Centre for Personality Development for school children. Draft an

advertisement to be published in a local daily about it, giving all relevant details.

POSTER MAKING

1.

You are the Secretary, Red Cross, New Delhi, Design a suitable poster prompting the citizens to

volunteer themselves for ‘BLOOD DONATION’ at various camps organized by the Red Cross in

the city.2.

Design a poster for the Anti – Smoking ‘Day creating awareness among the general masses

about the harms of smoking.

3.

You are Rajeev Nanda, Secretary Welfare Assocation, Faridabad City , Design a suitable poster

highlighting the EVILS OF DOWRY.

SPEECH WRITING

1.

You are Ram/Rama, Head Boy/Girl of ABC School. Write a speech, in 150-200 words, that you

would deliver in the prayer assembly on the need for students to inculcate in themselves virtues

like truthfulness, punctuality etc. so that they may not only succeed in their own life but also

prove role models for others.

2.

Write your views on the following issues in the form of a speech to the delivered in the morning

assembly of your school :

a)

Female Foeticide

b)

Importance of Games and Sports in Life

c)

Care for the elderly


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d)

Rain Water Harvesting

e)

Literacy for All

f)

Right to Information

g)

Scams and Scandals are Hampering our Progress

h)

Effects of Excessive T.V viewing by Children

i)

Avoiding Wastage of Food during Marriages

ARTICLE WRITING

1.

“What people read is what people believe”. You are concerned about the ongoing controversy

regarding media’s role in sensationalizing news, moulding public opinion and moral policing.

Write an article emphasizing the responsibility of media. You are Nayna Batra/Naresh Sharma

(word limit : 150-200).

2.

The number of women in police force seems insufficient specially when we see the increasinginvolvement of women in terrorist activities and criminal activities too. Write an article in 150-

200 words for ‘Hindustan Times’, on need of having more women in the police force.

3.

Every activity that man indulges in creates waste of some kind. Some of the waste can be

recycled or reused. In fact the need of the hour is to conserve the earth’s resources in all

possible ways. Write an article on the topic, “Conservation, Need of the Hour” in 150-200 words.

You are Kamal/Kamla, a keen environmentalist.

LETTER WRITING

1.

You are awaiting your class 12th results. Meanwhile, you would like to do a short term course on

personality development. Write a letter to the Director, Personal Care, Hyderabad, enquiringabout the course details. You are Kailash/Kusum of 148, Model Town, Delhi. (125 − 150 words)

2. You are Sudhir/Sita, the head boy/girl of ABC Public School, Jayanagar, Bangalore. An excursion

has been planned from your school to Mysore. Write a letter to the Secretary, Ace Youth Hostel,

Mysore requesting him to provide accommodation for 15 girls and 20 boys for three days. (125 −

150 words)

3.

You are Ram/ Rama of 70, Safdarjung Enclave, New Delhi. Write a letter to the Police

Commissioner about the unauthorized construction of a block of 3 shops in the adjacent public

park. (120-150 words)

NOTES ON Chapters 1-4 The Invisible Man

CHAPTER 1. The Strange Man’s Arrival

Summary

A stranger arrives in Bramble Hurst railway station.

He is bundled from head to foot with only the tip of his nose showing.

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He enters the Coach & Horses Inn and demands a room and a fire. Mrs. Hall, the owner prepares

a supper for him and offers to take his coat and hat, but he refuses to take them off.

When he finally removes the hat, his entire head is swathed in a bandage.

Mrs. Hall thinks he has endured some accident. She tries to get him to talk about himself, but he

is taciturn with her, although not particularly rude.

Notes

This introduction to the Invisible Man through the eyes of the town people is actually about midway

through his own story. He has already gone from place to place trying to keep his cover and has

committed two acts of violence, one against his own father and the other against the proprietor of a

costume shop whom he tied and gagged in order to be able to steal clothing and money. Nevertheless,

his intention at this point is simply to find a quiet place and work as quickly as possible to find an

antidote to the invisibility. The primary thread of the story-that of the growing rumors and suspicions,

which eventually contribute to his exposure-is begun.

CHAPTER 2. Mr. Teddy Henfrey’s First Impressions

Summary

Teddy Henfrey, a clock repairman, comes to the inn for tea. Mrs. Hall asks him to “repair the

clock” in the stranger’s room.

Teddy deliberately takes as long as he can with the clock, taking it apart and reassembling it for

no reason. The stranger finally gets him to hurry up and leave.

Offended, Teddy talks himself into believing that the stranger is someone of a suspicious nature,

perhaps even wanted by the police and is wrapped up to conceal his identity.

Teddy runs into Mr. Hall and warns him about the stranger, informing him that a “lot of luggage”will be coming. It would seem that the stranger intends to stay awhile.

Mr. Hall goes home intending to investigate the stranger, but is put off by the short-tempered

demeanor of his wife.

Notes

Mrs. Hall, although not a major character, is revealed as rather devious in a harmless sort of way. She

really wants to know what the man’s disfigurement is; she assumes he has been in a horrible accident,

and the motherly side of her wants to know how to express sympathy. She is a very good innkeeper

under the circumstances. While she is not above using Teddy to pry for information, she does not

contribute to the spread of rumors. In fact, we are told later that she defends him as long as he is

faithful about paying his bill. Teddy is a character typical of the other people of the town. He wants to

know the man’s story, and when he is rebuffed for his persistence, he begins to imagine all sorts of

things. His imagination soon becomes fact to him, and he spreads his new knowledge to anyone who

will listen.


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CHAPTER 3. The Thousand and One Bottles

Summary

The stranger’s luggage arrives at the inn. Numerous crates fill the deliveryman’s cart, some of

them containing bottles packaged in straw.

Fearenside, the cartman, owns a dog that starts to growl when the stranger comes down the

steps to help with the boxes.

The dog jumps for the stranger’s hand, but misses and sinks his teeth in a pant leg. The dog tears

open the trouser leg, whereupon the stranger goes quickly back into the inn and to his room.

Concerned about the possibility of injury, Mr. Hall goes to the stranger’s room. He gets a

glimpse of what seems like a white mottled face before he is shoved by an unseen force back

through the door.

The stranger soon reappears at the door, his trousers changed, and gives orders for the rest of

his luggage.

The stranger unpacks 6 crates of bottles, which he arranges across the windowsill and all the

available table and shelf space in the inn’s parlor-a space he seems to have commandeered for

himself.

Mrs. Hall enters later to tend to his needs and catches a quick glimpse of him without his

glasses. His eyes seem hollow; he quickly puts his glasses on.

She starts to complain about the straw on the floor, but he tells her to put it on the bill and to

knock before entering his rooms.

She points out that he could lock his door if he doesn’t want to be bothered, advice that hetakes. He then works behind the locked door all afternoon. At one point, Mrs. Hall hears him

raving about not being able to “go on.” She hears a sound like a bottle being broken.

Later she takes him tea and notes the broken glass and a stain on the floor. He again tells her to

“put it on the bill.”

Meanwhile Fearenside talks in the beer shop of Iping Hangar. Fearenside says that the stranger

is a “black man,” an assumption derived from the absence of “pink flesh” when the trouser leg

was ripped open.

When reminded of the pink nose, Fearenside claims that the man must therefore be a “piebald,”

or a part white, part black creature.

Notes

Fearenside is more observant than even he realizes. Of course, Griffin knows that a close look at his torn

pant leg will reveal a “missing” leg, but he also needs to get away from the dog until they can get the

animal under control. Subtle differences among characters of the town are beginning to be revealed.


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Mrs. Hall notices a “hollow” look to the guest’s eyes, an appearance masked by the dark glasses he

usually wears. His frustration is over the failure of his experiments; she notes the mess he makes but

cleans up after him with minimal complaint when he gives her extra money. Fearenside, on the other

hand, liberally discusses the “discoveries” he has made as a result of the brief encounter. Fearenside

refers to horses as an example of the “patchy” color that can happen when black and white are mixed.

CHAPTER 4. Mr. Cuss Interviews the Stranger

Summary

The stranger works diligently in his room until the end of April with only occasional skirmishes

with Mrs. Hall.

Whenever she disapproves of anything he does, he quiets her with additional payment. He

rarely goes out during the day, but goes out nearly every night, muffled up regardless of the

weather.

His identity becomes a topic of speculation in the town. Mrs. Hall defends him, repeating his

own words that he is an “experimental investigator.”

The view of the town is that he is a criminal trying to escape justice. Mr. Gould, the probationary

assistant imagines that the man must be an “anarchist” who is preparing explosives.

Another group of people believe he is a piebald and could make a lot of money if he chose to

show himself at the fairs. All agree, however, that due to his habits of secrecy, they dislike him.

The young men begin to mock his bearing; a song called “Bogey Man” becomes popular and

children follow at a distance calling out “Bogey Man.”

The curiosity of a general practitioner named Cuss is aroused, and he contrives for an interview.

During the interview the stranger accidentally removes his hand from his pocket. Cuss is able to

see down the empty sleeve to the elbow. Cuss questions him about “moving an empty sleeve.”

The stranger laughs, then extends the empty sleeve toward Cuss’s face and pinches his nose.

Cuss leaves in terror and tells his story to Bunting, the vicar.

Notes

In spite of Hall’s defense, Griffin will be the cause of his own destruction. Perhaps it is the frustration of

always having to guard his secret that causes him to act offensively when challenged, but in any case, he

could have handled the situation differently. The deliberate pinching of Cuss’s nose is not only an

unnecessary affront, but is also a mark of Griffin’s immaturity. Bringing pain upon others for the sake of

his own amusement, however, will soon deteriorate to performing criminal acts. In fact, althoughBunting is about to become Griffin’s new victim, Griffin has already been foraging at night for places that

he could rob in order to maintain his materials and keep up with his rent. This chapter nudges the plot

forward a bit by bringing in Bunting the vicar. The actions which will follow begin to bring the town

together in an awareness of a stranger in their midst.

holiday homework xiia_2016

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