# Fr. Agnel School Noida Holiday HW 2013 Class XII

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Fr. Agnel School Noida Holiday HW 2013 Class XII

FASN/XII/HW

Page
1

ENGLISH

Read the novel chapter 1 to 6

1.

Design two posters on the following theme:

1.

Global Warming

2.

Be kind to animals

3.

1. Lost and found 2. For Sale 3. To
-

Let 4. Matrimonial. 5. Missing

1. The Enemy 2. The Rattrap

MATHS

1.

Differentiate w.r.t x

2.

Differentiate y = a
x

+ x
a

+ a
a

+ x
x
w.r.t. x.

3.

Differentiate
w.r.t.x for x>0, a>0.

4.

Differentiate
w.r.t.x

5.

Find

6.

7.

Prove that

8.

If
Show that

9.

If

10.

If y =

prove that
(

)

+
sinx = 0

11.

If

12.

Find
if

13.

Find
if y = x log (logx)

14.

If Sin y = x sin ( a + y ) , with Cos a ≠ 1, P.T

15.

If y = acos(logx) +bsin(logx). S.T. x
2
y
2
+ xy
1
+ y = 0.

Fr. Agnel School Noida Holiday HW 2013 Class XII

FASN/XII/HW

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2

16.

If y =
, Prove that (1+x
2
)
2

+2x((1+x
2
)

= 2.

17.

If
, show that (1+x
2

) y
2
+(2x
-
1)y
1
=0.

18.

If
, show that (1
-
x
2

)y
2

-
xy
1

= 0

19.

If
, show

that (1
-
x
2

)y
2

-
xy
2

-
a
2
y =0 .

20.

If
show that (1
-
x
2

)y
2

-
xy1
-
m
2
y =0 .

21.

If y = 3e
2x
+2e
3x
, then prove that y
2
-

5y
1
+ 6y = 0

22.

If x =sint, y = sinpt. Show that

23.

If y = sin
. S.T. (1
-
x
2
)y
2
-
xy1+ m
2
y =0.

24.

Find the value of a and b so that

25.

Determine the value of ‘a’ so that

f(x) =

{

is continuous at x = 0

26.

If f ( x ) =

{

is continuous at x = π / 2

27.

is continuous on [0,8]

28.

Find a and b so that f(x) =
{

is continuous on [0, π]

29.

Find a and b so that f(x) =

{

(

)

is continuous at x = 0.

Fr. Agnel School Noida Holiday HW 2013 Class XII

FASN/XII/HW

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3

30.

Find k so that

f(x) =
{

is continuous at x = 2.

31.

Show that f(x) =
|

|

|
|

is a continuous function.

32.

Show that f(x
) =

|

|
is continuous but not differentiable at x = 2.

33.

Discuss the differentiability of f(x) = x
at x = 0.

34.

Discuss the differentiability of f(x) =
|

|

|

|

PHYSICS

1.

Derive expression for the capacitance of a parallel plate capacitor

2.

Show that the
capacitance of a capacitor increased by introducing a dielectric slab in
between its plates

3.

Derive expression for the energy of a capacitor

4.

State Kirchoff`s laws.

5.

Expalin how metre bridge can be used to find unknown resistance

6.

Explain How potentiometer
can be used to compare the emf of two cells

7.

Which instrument is used to find internal resistance of a cell

8.

Write two methods for increasing the sensitivity of potentiometer

9.

Why potentiometer is better than voltmeter for measuring the emf of a cell

10.

What is
an equipotential surface. Write its two properties

11.

Why two equipotential surfaces will never intersect each other

12.

Derive the relationship between electric field and electric potential

13.

Draw equipotential surfaces for a system of two (a) like point charges (
b)unlike charges (c) for
uniform electric field (d) for an isolated point charge

14.

Derive potential energy of an electric dipole located in a uniform electric field

15.

Two point charges 3mC and
-
2 mC are located 15cm apart. At What point on the line joining
the

two charges is the electrical potential zero. I

16.

Sketch the variation of specific resistance for metals, alloys, semiconductors

17.

What is the work done to displace 2C charge along the surface of a sphere of radius 2cm when
1C charge is located at its cent
re

18.

Define drift velocity. Derive the relationship between drift velocity and electric current .Derive
the relationship between relaxation time and resistivity using the concept of drift velocity

19.

A wire has resistance 90 Ohm. It is cut in to 3 parts of equ
al length . If these are now
connected in parallel find resistance of the combination a0

20. What is an electric field line . Write any three properties

21.Why two electric field lines will never intersect each other

22.

Derive torque acting on an electric dipole located in a uniform electric field and hence state
the condition foir its stable equilibrium

23.

Sketch magnetic field lines of a system of (a)like charges and (b)unlike charges .

24.

Derive intensity of electric field a
long the equatorial line of an electric dipole

25.

Name the physical quantity with the following units (a) Cm (b)N/C (c) V/m (d)J/C

CHEMISTRY

Revise all the syllabus done in class for the class test on 4. 07. 06

Complete the NCERT questions and both the as
signments given in assignment note book.

Select the topic for investigatory project for Board practical Exam.

Complete Practical Files.

FAS, NOIDA/ Class
-
XII/ Chemistry Assignment

TOPIC

ORGANIC CHEMISTRY

Fr. Agnel School Noida Holiday HW 2013 Class XII

FASN/XII/HW

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4

1.

Write a chemical test to
distinguish between the following:(also write a chemical reaction to

a)

Ethanol and propanol

b)

Acetaldehyde and acetone

c)

Ethanal and

Propanal

d)

Phenol and benzyl alcohol

e)

2
-
Methylpropan
-
2
-
ol and propanol

2.

Write a note on:

a)

Kolbe’s reaction b) Reimer

Aldol condensation d)Cannizzaro,s Reaction

f)

Clemensen’s reduction f) Stephen’s reaction

Hoffmann’s bromamide reaction

Gabriel phthalimide Synthesis

i)

Sandmeyer reaction j) Swarts reaction

j)

Coupling reaction l) Balz
-
s
cheimann reaction

3.

How will you convert:

a)

Aniline to Phenyl isocyanide

b)

Ethyl chloride to but
-
2 yne

c)

Aniline to chlorobenzene

d)

Ethyl chloride to propanoic acid

e)

Isopropyl chloride to n
-
propyl chloride

f)

Propan
-
2
-
ol to 1
-
Bromopropane

g)

Methanal to propanol

h)

2
-

Methylpropan
-
2
-
ol to 2
-

Methylpropene

i)

Phenol to salicylic acid

j)

Ethanoyl chloride to ethanal

k)

Toluene to Benzaldehyde

l)

Propanone to propane

m)

Ethanal to 2
-
hydoxypropanoic acid

n)

Ehanamide to ethanamine

4.

Arrange the following in increasing order of the property

as indicated:

a)

Propan
-
1
-
ol, 2,4,6
-
trinitrophenol, 4
-
nitrophenol, 3
-
nitrophenol, 3,5
-

dinitrophenol, phenol, 4
-
methylphenol, 4
-
methoxyphenol (acidic strength)

b)

(CH
3
)
3
CCl, C
6
H
5
C(CH
3
)
2
Cl, (CH
3
)
2
CHCl, CH
3
CH
2
CH
2
Cl (reactivity towards S
N
1
reaction)

c)

Acetaldehyde,
acetone, Di
-
tert
-
butylketone, Methyltert
-
butylketone (reactivity towards HCN)

d)

Benzoic acid, 4
-
nitrobenzoic acid, 3,4
-
Dinitrobenzoic acid, 4
-
Methoxybenzoic acid (acid
strength)

e)

(CH
3
)
3
N, (CH
3
)
2
NH, CH
3
NH
2

(basic strength in aqueous solution)

f)

C
2
H
5
OH, (CH
3
)
2
NH,

C
2
H
5
NH
2

(Boiling point)

5.

Give reason for the following:

a)

Why Gabriel Phthalimide synthesis cant be used for the preparation of aryl amines?

b)

Why arenediazonium salts are much more stable than alkanediazonium salts?

c)

Why alkyl amines are stronger basis than
ammonia or aryl amines?

d)

Why aniline is acetylated to prepare its monobromo derivative?

e)

Why trichloroacetic acid is stronger acid than acetic acid?

f)

Why ketones upon oxidation always give carboxylic acid having lesser no. of carbon atoms
than the parent com
pound?

g)

Why phenol is more acidic than alcohol?

Fr. Agnel School Noida Holiday HW 2013 Class XII

FASN/XII/HW

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5

h)

Why cleavage of alkyl phenyl ethers with HBr always produces phenol and alkyl bromides and
not bromobenzene and alkanols?

i)

Why aryl halides are less reactive towards nucleophilic substitution than alkyl halides
?

j)

Why S
N
2

mechanism always gives a product with inverted configuration?

6.

An organic compound A having mol.formula C
4
H
8

on treatment with dil.H
2
SO
4

gives B. B on
treatment with conc. HCl and anhyd.ZnCl
2

gives C and on treatment with sod.ethoxide gives back
A
. Identify A, B, C and write reactions involved.

7.

An organic compound A with mol.formula C
5
H
10
O gave a positive 2,4 DNP test. It was oxidized to
carboxylic acid B with mol. Formula C
3
H
6
O
2

when treated with alk.KMnO
4

under vigorous
condition. Sodium salt of B gave a hydrocarbon C on Kolbe’s electrolytic reduction . Identify A, B, c

An organic compound A with mol.formula C
2
H
5
O
2
N reacts with HNO2 and gives B C
2
H
4
O
3
N
2
. On
reduction A gives
a compound C with mol. Formula C
2
H
7
N .C on treatment with HNO
2
gives D
which gives positive iodoform test. Identify A.Write reactions invoved.

CLASS

XII/CHEMISTRY/SOLUTIONS

1.
Calculate the molality and mole fraction of 2.5g of ethanoic acid in 75g of be
nzene.
(0.556m, 0.0416)

2
. Find the molarity and molality of a 15% solution of H
2
SO
4
(density of H
2
SO
4
=1.020g/cc).
(1.8m, 1.56M)

3. A 6.90M solution of KOH in water contains 30% by mass of KOH. Calculate the density of KOH
solution .
(1.288
g/ml)

4. If 20cm
3

of 1M CaCl
2

and 60cm
3

of 0.20M CaCl
2

are mixed, what will be the molarity of the final
solution?
(0.40M)

5. At what partial pressure, oxygen will have a solubility of 0.05g/L in water at293K? Henry’s constant(K
H
)
for O
2
in water at293K
is 34.86kbar. Assume the density of the solution to be same at that of the solvent.
(0.98bar)

6.The vapour pressure of benzene and toluene at293K are75mm and 22mm Hg respectively. 23.4g of
benzene and 64.4g of toluene is mixed. If the two form an ideal sol
ution, calculate the mole fraction of
benzene in the vapour phase assuming that the vapours are in equilibrium with the liquid mixture at this
temperature.

(0.59)

7. Vapour pressure of water at 293K is 17.51mm. Lowering of vapour

pressure of sugar solution is
0.0614mm. Calculate (i)Relative lowering of vapour pressure (ii)Vapour pressure of the solution (iii)Mole
fraction of H
2
O

8. At 298K, the vapour pressure of water is 23.75mm Hg. Calculate the vapour pressure at the same
tem
perature over 5% aqueous solution of urea[CO(NH
2
)
2
].
(23.375mm)

9. A solution containing 10.2g glycerine per litre of a solution is found to be isotonic with 2% solution of
glucose. Calculate the molecular mass of glycerine.
(91.9gmol
-
1
)

10. At 300K, 3
6g of glucose present per litre in its solution has an osmotic pressure of 4.98bar. If osmotic
pressure of the solution is 1.52bar at the same temperature, what would be its concentration?
(10.98gmol
-
1
)

11. Calculate the boiling point of a solution contain
ing 0.456g of camphor(mol mass= 152) dissolved in
31.4g of acetone(b.pt.= 56.30
0
C), if the molal elevation constant per100g of acetone is 17.2
0
C.
(56.46
0
C)

12. The molal freezing point depression constant of benzene is 4.90Kkgmol
-
1
. Selenium exists as the
polymer of the type Se
n
. When 3.26g of selenium is dissolved in226g of benzene, the observed freezing
point is 0.112
0
C lower than for pure benzene. Deduce the molecular formula of selenium(At. Mass=
78.8gmol
-
1
).
(Se
8
)

13. KI and sucrose solution with 0.1M concentration have osmotic pressure of 0.465atm and 0.245atm
respectively. Find the van’t Hoff factor of and its degree of dissociation.
( 1.898, 89.8%)

1
4. An aqueous solution containing 1.248g of barium chloride in 10
0g of water boils at 100.0832
0
C.
Calculate the degree of dissociation of BaCl
2
(K
b

for water= 0.52Kkgmol
-
1
).
(0.835)

15. Calculate the boiling point of a solution containing 0.61g of Benzoic acid in 50g of carbon disulphide
assuming 84% dimerisation of the
acid. The boiling point and K
b

of CS
2

are 46.2
0
C and 2.3Kkgmol
-
1
.
Fr. Agnel School Noida Holiday HW 2013 Class XII

FASN/XII/HW

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(46.333
0
C)

BIOLOGY

1.

Complete the assignment questions given in the class.

2.

Work on the allotted topics and prepare an investigatory project report and submit.

3.

Revise all the topics t
aught in the class.

4.

Complete biology practical file work .

Biology Project Guidelines
-
Class 12

S.no.

Contents

1

Cover page with project title

2

Objective /aim of the project

3

Table of content
and page number

4

Introduction
-
information collected from various sources related to the
topic with appropriate pictures/illustrations.

5

Experimental procedure
-

Write details of experiment conducted in
steps.

6

Observations
-

Make tables/charts if
required.

7

Results or analysis of data

8

Discussion over results.
-
Compare the results with those available and
reason out.

9

Conclusion or inference.

10

List of resources (List of

encyclopedia ,websites, reference

books, journals etc)

11

Acknowledgement.

IP

1. Display a message using Label, TextBox, MessageDialog using simple GUI applications

2. Concatenate two text entries and display the result.

3. Perform a simple arithmetic operation (+,
-
,*,/) and display the result in
MessageDialog or

TextBox

4. Make simple decision making (if statement) solution and display relevant message using GUI

application

(Example
-

Problems related to Eligibility for a given value of Age, "Profit" or "Loss"

messages for

given values of Cost Price and Sale Price, Grade Display for given values of

Marks of students etc.)

5. Create a GUI application to perform both arithmetic and logical operation together (Example
-

Total, Average and Grade calculation for given ma
rks, Salary Calculation on different criteria)

6. Create a GUI application to perform an operation based on the criteria input by the user in a

(Example 1: Find the Discount of an item on the basis of Category of item [El
ectrical

Fr. Agnel School Noida Holiday HW 2013 Class XII

FASN/XII/HW

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7

1000/Above 1000/Equal to 1000 specified using a Radio button]).

(Example 2: Calculate the incentive of a Sales Person on the basis of
his Sales Amount,

Customer Feedback, Count of Customer specified using CheckBox)

7. Create a GUI application to change the property of a swing element based on the selection

(Example 1: To change the background or Foregro
und color of any of the Swing elements of

The form based on the color selected from a list)

(Example 2: To change the foreground and background color of a label based on the values

input/stored in a combo box)

8. Create a GUI
application for repeatedly doing a task based on the user input.

(Example: To display the multiplication table of a number input by the user)

9. Store the data (Admission No., Name, Date of Birth, percentage ,grade,Class and Section) of

stud
ents in a table (Table) in MSQL

a)

Write a query to find total number of students in each class and section.

b)

Write a query to display the name in ascending order.

c)

Write a query to display the names of those student whose percentage is greater than
78 and
belong to C section.

d)

Write a query to display Name ,class , section and Admmision No. whose grade is
between A1 and B2

For Grade A2 percentage >90 , A1 percentage>80 , B2 percentage >75 ,B1percentage
>65

All the above Question/GUI Application is to be e
xecuted in the Netbeans and then print

(
both
Snapshots

and source code ) and submit in a file .

1. Consider the following code snippet and give its output:

int a =14;

if (a>= 10){

if (a==10)

jLabel1.setText(“first string”);

else

jLabel1.setText(“second string”);

}

jLabel2.setText(“third string”);

2. What value for x will print exactly 20 lines to standard output:

int count=0;

while (count++ <x)

{

jTextField1.setText(“line” +count);

}

a) 0

b) 5

c) 10

d)11

3. Write two methods each of checkbox and radio button.

Fr. Agnel School Noida Holiday HW 2013 Class XII

FASN/XII/HW

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4. Write short notes on i) Inspector window ii) palette iii) container control iv) GUI builder

5. Design a GUI application in Java to accept a string

from the user in a text field and check whether

it is a palindrome or not.

6. Design a GUI application in Java to accept a character in a text field and print whether it is a

vowel, consonant, number or other character .

7. Determine the error
in the following statements:

a) int c=7,b=5,f=15; d=21;

b) a=b*c= a+b;

8.
Design a GUI application to print first 10 natural number in a text field.

9. Evaluate the following expressions where a,b,c are integers and d,f

are floating point numbers:

The values are a=5,b=3 and d = 1.5

a) c=a
-
(b++) * (
--
d);

b) f= (++b)*b
-
a;

10. What will be the value of the following if j=5 initially:

a) (5* ++j )%6;

b) (5* j++)%6;

11
. What is the difference between num=5 and

num ==5?

12
. What output will the following code fragment produce?

String str =jTextField1.getText();

int val, res, n=1000;

val=Integer.parseInt(str);

res=(n+val)>1750?100:200;

jLabel1.setText(“”+ res);

i)

if the input is 2000

ii)

if the input is 1500

iii)

if

the input is 200

14.Given the value of a,b,c as a=10,b=5,c=11 evaluate the following expression:

(a>=b) || (!c== b) && (c<a)

15. What will be the output of the following expression:

y
-
x<500? 150:50

a) x=300 y=700

b) x=300 y=900

16 Find the errors in the following code segment:

The following code should print whether integer nVal is odd or even:

switch (nVal%2)

{

case 0: jLabel1.getText(“even integer”);

case 1: jLabel1.setText( “odd integer”);

}

Q17 Solve at least 2 CBSE bo
ard paper (also include 2013) in Class copy.

(Attempt those questions which we have covered in Class)

Fr. Agnel School Noida Holiday HW 2013 Class XII

FASN/XII/HW

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9

HOM SCI

1.

Practical
work to be completed
as discussed in
the
class
.

2.

Revise all the lessons done so far.

3.

Prepare a meal for adolescent girl,
boy, infant, school going child, pregnant
lady, lactating mother, person suffering from fever, diarrhea and elderly
person.

4.

Submission of the note book will be after holidays.

5.

This includes Unit I (except preventable diseases) and Unit II.

ACCOUNTS

PROJECT

Frame a comprehensive problem and prepare vouchers, journal, ledger, cashbook, trial balance, trading
a/c, profit and loss a/c and balance sheet from the same.

ACTIVITY

Study of changes in share prices over a period of time

Collect share prices of
any four companies from Times of India for 15

working days. Do comparative study of all companies

and decide :

a) When to invest in each company in order to gain maximum profit

b) Which company is best to invest in

DATE OF SUBMISSION OF THE PROJECT:01.07.
13

DATE OF SUBMISSION OF THE ACTIVITY: 03.07.13

B.ST

Prepare a detailed project on the basis of any one of the following categories:

Principles of Management

Marketing management

Few topics of each category is provided for guidance, it is advised that students should choose a topic of
their own .

Principles of Management:

Visit to a departmental store or a fast food outlet. Observe the application of the general principles of
mana
gement advocated by Fayol or application of scientific management techniques by F.W.Taylor in the
unit visited.

Coca Cola and Fanta in the seventies to Thumps up and Campa Cola in the eighties to Pepsi and Coke in
ninetie
s.

Reasons of stopping the manufacturing of the above mentioned drinks in India THEN. The introduction of
Thumps up and Coca Cola range. Re entry of Coke and introduction of Pepsi in the Indian market.

Marketing management:

Conduct a market research with
the objective of finding out a product/service whose marketing may be
profitable like Moisturiser, Jeans, Noodles, Shoes etc. project should include:

Brand name and the product

Range of the product

Identification mark or logo

Tagline

Fr. Agnel School Noida Holiday HW 2013 Class XII

FASN/XII/HW

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Labeling and Packeging

Price of the product and Price fixation

Selected channels of distribution and reasons thereof

Promotional techniques etc

PRESENTATION AND SUBMISSION OF PROJECT REPORT.

Following essentials are required to be fulfilled for its preparation and submission.

1. The total length of the project will be of 25 to 30 pages.

2. The project should be handwritten.

3. The project should be presented in a neat folder.

4. The project report should be developed in the following sequence
-

a) Cover page should include the title of the Project, student information, school and year.

b)List of contents.

c)Acknowledgements and preface (acknowledging the institution, the places visited and the persons who
have helped).

d)Introduction.

e)Topic

f)Planning and activities done during the project, if any.

g)Observations and findings of the visit.

h)Conclusions (summarised suggestions or findings, future scope of study).

i)Photographs (if any).

j)Appendix .

k)Teacher’s o
bservation.

l)Signatures of the teachers.

DATE OF SUBMISSION OF THE PROJECT:01.07.13

ECONOMIC
S

(Cost, Revenue &Elasticity)

1.

Complete the following table:

Output (units)
Total

Variable

Cost

Total Cost

Marginal Cost

1

60

20

2

18

3

18

4

20

120

5

22

2.

Complete the following table:

Output (units)

Price

Total Revenue

Marginal

Revenue

Fr. Agnel School Noida Holiday HW 2013 Class XII

FASN/XII/HW

Page
11

4

9

36

5

4

6

42

7

6

8

40

3.

Commodities X and Y have equal price elasticity of demand. The demand for X rises from
400 units to 500 units due to a 20 per cent fall in its price. Calculate the percentage rise in
demand for Y if its price falls by 8 per cent.

4.

Complete the following t
able:

Output (units)

Average

Revenue

Marginal

Revenue

Total Revenue

1

15

2

26

3

11

4

3

5.

Complete the following table:

Output (units)

T
V
C

A
V
C

MC

1

10

8

6

3

27

10

13

6.

A consumer buys 40 units of a good at a price of ` 2 per unit. When price rises to 4 per unit
he buys 30 units. Calculate price elasticity of demand by the total expenditure method.

7.

A consumer buys 80 units of a good at a price of ` 5 per

unit. Suppose price

elasticity of
demand is (

)2. At what price will he buy 64 units?

8.

The price elasticity of demand for

a commodity is 2. When its price falls from ` 10 to

8 per
unit, its quantity demanded
rises

by 500 units. Calculate the quantity
deman
ded
at the
reduced price.

9.

The total fixed cost of a firm is ` 12. Given below is its marginal cost schedule.

Calculate
total cost and average variable cost for each given level of output.

Output (units)

1

2

3

4

5

6

Marginal cost

9

7

2

4

8

12

10.

Calculate the price elasticity of demand for a commodity when its price increases by 25%
and quantity demanded falls from 150 units to 120 units.

11.

The price elasticity of demand

of good X is hal
f the price elasticity of demand

of

Good

Y. A 10% rise in
the price of good Y

results in a fall in its demand from 520

units

to 400

u
nits.
Calculate the percent
age change in quantity demanded
of good X when

its price falls
from ` 10 to ` 8 per unit.

12.
Complete the following table:

Fr. Agnel School Noida Holiday HW 2013 Class XII

FASN/XII/HW

Page
12

Output (units)

Total
Cost

Average Variable

Cost

Marginal Cost

0

80

1

180

2

270

3

350

4

440

13.
Total fixed cost of a firm is ` 12. Calculate total cost and average variable
cost for

each
given level of

output from its marginal cost schedule.

Output (Units)

Marginal Cost (
`
)

1

9

2

7

3

2

4

4

5

8

6

12

14.
Complete the following table:

Q

TVC

AVC

MC (` )

1

12

2

20

3

10

10

4

40

15.
The quantity demanded of a commodity at a price of ` 8 per unit are 600 units. Its

price
falls by 25 per cent and quantity demanded rises by 120 units.
Calculate its

price elasticity of
deman
d

17.If the price of a commodity rises by 10% and its demand falls accordingly by 20% calculate its ed.

18.If

the price of a good rises from Rs8 to Rs10 and its demand falls by 75% ,what is ed.?

19 When a consumer buys 80 units of a good at a price of 4 Rs per unit. Due to a fall in price he buys 100
units and if ed is (
-
)1 ,find the new price.

20.At a price of R
s 20 per unit ,the qty of a good is 300 units .If the price falls by 10% quantity rises by 60
units calculate ed.

21.A 5% fall in price of X causes 10% rise in demand for a commodity X. A 20% rise in price of commodity Y
leads to 5% fall in demand for Y.
Calculate ed for X and Y.

22.If ed is (
-
)0.2 ,if price increases by 8% ,by what percent will the demand for the good go down ?

23.600 units of a good are demanded at Rs 8.If price falls by 25% and quantity rises by 120 units calculate
ed.

24.The price ed
for good X is twice that of good Y. Price of X falls by 5% and of Y rises by 5%,find out the %
change in the quantity demanded of X and Y.

25.The demand for goods X and Y have the same ed. The demand for X rises from 100 to 200 units due to
20% fall in its

price. Calculate % rise in demand of Y if its price falls by 8%.

26.The price of a commodity falls from Rs 4 to Rs 3 and this has led to increase in the total expenditure
from 20Rs to 30 Rs .Calculate ed.

27A 5% fall in price leads to 10% rise in dema
nd .A consumer buys 40 units of a good at a price of Rs 10
per unit .How many units will the consumer buy at a price of Rs 12 per unit ?

28.The demand for a good doubles due to 25% fall in its price. Calculate its ed.

Fr. Agnel School Noida Holiday HW 2013 Class XII

FASN/XII/HW

Page
13

GEOGRAPH
Y

Practical

Work

to be compl
eted as discussed in class
.

This includes:

Chapter 1: Data
-
Its source and compilation

Chapter 4: Use of Computers in Data Processing and Mapping

Chapter 5: Field Survey (page 71
-
74)

Chapter 6: Spatial Information Technology

PSYCHOLO
GY

Revise the whole syllabus and complete the assignment

HISTORY

Revise chapter 1
-
6

Find the answers to the given questions from chapter 5 and do t
he first 20 questions in the

notebook.

Comp Sci

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Fr. Agnel School Noida Holiday HW 2013 Class XII

FASN/XII/HW

Page
14

c
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2

Fr. Agnel School Noida Holiday HW 2013 Class XII

FASN/XII/HW

Page
15

};

(
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t
r
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c
t
o
r
3?

5.

Fr. Agnel School Noida Holiday HW 2013 Class XII

FASN/XII/HW

Page
16

Fr. Agnel School Noida Holiday HW 2013 Class XII

FASN/XII/HW

Page
17

Fr. Agnel School Noida Holiday HW 2013 Class XII

FASN/XII/HW

Page
18

Fr. Agnel School Noida Holiday HW 2013 Class XII

FASN/XII/HW

Page
19

Fr. Agnel School Noida Holiday HW 2013 Class XII

FASN/XII/HW

Page
20