Holiday Homework

Class XI

Subject : English

1. Prepare a one minute speech for ASL Examination on any one of the given topics.

2. Read the novel Canterville Ghost and prepare a chapter wise synopsis .

3. Prepare a report in 150 to 200 words on the topic '2016-The year gone by'.

4. Practice poster making, notice, advertisements and letter writing.

Subject: Economics

Q.1 Calculate median from the following data:

Class

interval

Below 10 Below 20 Below 30 Below 40 Below 50 Below 60 Below 70

Cumulative

frequency

20 30 40 60 90 100 120

Q.2 Given the median wage rate is Rs. 17.5, find out missing frequencies if total number of workers

are 50.

Wage rate 0-5 5-10 10-15 15-20 20-25 25-30

No. of workers 3 7 ? 20 ? 5

Q.3 find mode:

Class interval 10-19 20-29 30-39 40-49 50-59 60-69 70-79

frequency 8 6 20 50 20 2 3

Q.4 Calculate the value of range and its coefficient:

Wages 20-30 30-40 40-50 50-60 60-70 70-80

No. of workers 25 30 40 56 72 18

Q.5 Find out inter quartile range, quartile deviation and coefficient of quartile deviation:

Class interval 0-10 10-20 20-40 40-60 60-90

No. of students 5 8 16 7 4

Q.6 Calculate mean deviation and its coefficient using median:

Marks 5 10 15 20 25

No. of students 2 3 4 5 6

Q.7 Find out mode graphically:

Income 0-10 10-20 20-30 30-40 40-50 50-60 60-70

No. of workers 10 15 20 25 15 10 5

Q.8 Define upper quartile.

Q.9 Mention any two merits and demerits of mode.

Q.10 What is meant by land reforms?

Q.11 Define consolidation of land holdings.

Q.12 “Gains of green revolution are significant but not sufficient.” Comment on this statement.

Q.13 Practice the essential practical chapter 10 and 11 in Elementary Statistics.

Subject : Business Studies

Prepare business studies project as per CBSE guidelines.

Subject : Accountancy

All short question answers of rectification of errors, financial statements and financial statements with

adjustments.

All illustrations of rectification of errors.

All short theory question answers of rectification of errors, financial statements and financial statements

with adjustments

Subject: Applied Art

Practicals.

LOGO DESIGNING

2 existing

2 creative

TAG DESIGNING

5 layouts n final design

Of any product alongwith details

Subject: Informatics Practices

Q1. Write output of followings: SELECT MOD(7,5) + 10; SELECT RIGHT(“WELCOME YEAR 2014”, 4)+48 SELECT INSTR(“RED GREEN BLUE, “GREEN”); SELECT DAYOFMONTH(“2011-12-28”) + 28; SELECT CHAR(75, 80, 100); SELECT ROUND(34672.3456,-3);

Q2 Answer the following questions:

i. Suhani forgot to set a primary key while creating table “Department”. Write the SQL statement

which she should write now to set the column “DeptID” as the primary key of the table.

ii. What is the following query doing?

ALTER TABLE PERSONS DROP PRIMARY KEY;

iii. Antika wants to add all those records from the table “BANK” to a new table

“SAVINGACCOUNT” where account type is “SAVING”. Help Antika to write the SQL

statement for this.(Assume field name is ACCTYPE for storing type of account).

iv. Indicate what is incorrect in following CREATE TABLE statement:

(i). CREATE TABLE T1(C1 INT , C2 INT NOT NULL, C3 INT, PRIMARY KEY(C1,C4));

(ii). CREATE TABLE T1(C1 INT , C2 INT NOT NULL, C3 INT, PRIMARY KEY(C1,C3,C1));

Q3. Write the program for the followings :

1. To check a number is multiple of both 3 and 5.

2. To create a series 3 5 9 15 23 N terms

3. To print the HCF of 3 numbers.

4. To print the second max of 4 numbers.

Q4. Rewrite the following using if statement:

1.

int x=3;

switch(x)

{

case 2 :

JOptionPane.showMessageDialog(null, “I have Cleared 11 Class”);break;

case 3 :

JOptionPane.showMessageDialog(null, “I will Clear 12 also”);break;

case 5 :

JOptionPane.showMessageDialog(null, “I will appear in college”); break;

default :

JOptionPane.showMessageDialog(null, “Do not know about you”);

}

2.

char ch=’c’;

switch(x)

{

case ‘a’ :

case ‘b’ :

JOptionPane.showMessageDialog(null, “I am on top”);break;

case ‘c’ :

JOptionPane.showMessageDialog(null, “I lost”);break;

default :

JOptionPane.showMessageDialog(null, “Avoid sports”);

}

Rewrite the following using do while loop:

1.

for(int i=1;i<=10;i+=3)

System.out.println(“Hello World” + i*2);

2.

char ch=’c’;

while(ch++<’f’)

{

System.out.println(++ch);

}

Also specify how many times the loops will execute.

Q3. Find the errors in the following code and rewrite the correct code.

1.

int x;

x=10;

while(x<>20)

(

if(x mod 3==1)

System.put.println(“A”);

else

System.put.println(“B”);

x=+4;

)

2.

int j=0,k=0, r=10;

for (j=1;j<=5;j++)

{

if(r<15);

r=r+j+2;

else

r=r%5+j*2;

}

System.put.println(value of r is + “r”);

Q4. Find the output of the followings:

1.

int j=0,k=0, r=10;

for (j=1;j<=5;j++)

{

if(r<15)

r=r - j + 5;

else

r =r + j -7

System.out.println(r++);

}

2.

int j=0,k=0, r=10;

do

{

j+=3;

if(r%4==0)

break;

else

r =r + j -7

System.out.println(r++);

} while(j<=5);

Q5. Which statement will not be executed in the code given below:

1.int x=10,y=20;

2.while(x>=5)

3.{

4. if(x%2!=0)

5. y=y+20;

6. else

7. y=y-20;

8. x++;

9.}

Subject: Chemistry

Worksheet-1/ Hydrocarbons

1-Explain in brief;

a) Wurtz reaction

b) Kolbe’s reaction

c) Aromatisation

d) Polymerisation

e) Friedel crafts reaction

2-Describe o,p and m directive influence with the help of resonating structures

3-Write any ten examples of hydrocarbons containing triple bond

4-Explain mechanism of addition of HBr to propene according to markonikofs rule

5-Explain electrophilic substitution in benzene(anytwo)

6-What is electromeric effect?Explain

7-Describe delocalisation in benzene.

8-Give the factors which decide the aromaticity in an organic compound.

9-Give structures of;

a) Naphthalene

b) Aniline

c) Phenol

d) Nitrobenzene

e) Toluene

f) Benzaldehyde

g) Benzoic acid

h) Bebzene sulphonic acid

i) Chlorobenzene

j) Bromobenzene

10-Describe inductive effect in detail with examples.

Worksheet -2\States of matter

1-Explain Boyle’s Law with its mathematical expression.

2-Derive Ideal gas equation.

3-Why do gases deviate from ideal behaviour? Explain.

4-Give vanderwaal’s equation for real gases.

5-Explain Dalton’s Law of partial pressure.Give expression.

6-What is surface tension? Explain with diagram.

7- What do mean by viscosity?Explain by taking few examples.

8-Write short notes on;

i)Avogadro ‘s Law

ii)Charle’s Law

iii)Vapour pressure

9-Explain kinetic theory of gases.

10-What is combined gas equation? Why does boiling point of water decrease on hill stations?

Worksheet-3/Questions Hydrogen, s and p block elements

Q. 1 Out ofCO2 and BF3, which one of them will have a larger bond angle and why?

Q. 2 Among the elements B, Al, C and Si:

(a) Which has the highest first ionization enthalpy?

(b) Which has the most negative electron gain enthalpy? Give reason.

Q3 An element ‘A’ belongs to group 2 of the periodic table. It shows anomalous

behaviour from the rest of the elements of its group. It shows a diagonal

relationship with another element ‘B’. Chlorides of both ‘A’ and ‘B’ have bridged

structure in vapour phase. Identify A and B and draw the structures of their

respective chlorides

Q. 4 A metal ‘X’ is present in chlorophyll. Identify the metal ‘X’. How does this metal

react with N2?

Q5 Write the chemical reaction involved in Kolbe’s electrolytic process.

What are the products formed at cathode and anode?

Q 6 Why are alkali metals used in photoelectric cells?

Q. 7 Explain giving reasons for the following:

a. Boron does not form B3+ ions.

b. Molten aluminium bromide is a poor conductor of electricity.

c. BCl3 is more stable than TlCl3.

d. B-Cl bond has a dipole moment but BCl3 has zero dipole moment.

e. Al is used to make transmission cables.

Q8 Explain the following reactions:

a. Silicon is heated with methyl chloride at high temperature in the presence of

copper powder

b. CO is heated with ZnO

c. Reaction of boron trifluoride with LiAlH4 in diethyl ether

d. Reaction of boron trifluoride with sodium hydride at 450 K

e. Reaction of diborane and water

Q.9 Critical temperature of ammonia and carbon dioxide are 405.5 K and 304.10 K

respectively. Which these gases will liquefy first when you start cooling from

500K to their critical temperature

Q10 Draw the structure of B2H6 and explain the bonding in the molecule.

Q11 Give the reactions to show the Amphoteric nature of water.

Q12 What do you mean by Hydration enthalpy, how it differs with size of ion ?

Subject: Mathematics

Subject: Biology

1-What is the role of ca++ and ATP in muscle contraction?

2-In old age people often suffer from stiff and inflammed joints .What is this condition called? What are

the possible reasons for these symptoms?

3- With respect to rib cage, explain the following –

(a) Bicephalic ribs (b) True ribs (c) Floating ribs

4-An elderly woman slipped in the kitchen and had severe pain in her lower back. After X-ray

examination doctor told her it is due to slipped disc. what does that mean ? how does it affect our

health?

5- Write explainatoary notes on the following-

(a)Osteoarthritis (b) Gouty Arthritis (c) Osteoporosis

6- Draw and label the different components of actin and myosin filament.

7-Explain the mechanism of formation of concentraced urine in mammal.

8- Draw a labeled diagram showing reabsorption and secretion of major substances different parts of

nephron.

9-How does tubular secretion help in maintaining ionic and acid base balance?

10-The glomerular filtrate in the loop of Henle gets concentrated in descending and then gets diluted in

the ascending limb. Explain.

11-How have the terrestrial organism adapted themselves for conservation of water?

12-Draw the L.S. of human kidney. Label any 10 parts .

13- What are Meibomian glands?

14-While travelling at higher altitude a person complains of dizziness and vomiting sensation. which part

of the inner ear is disturbed during the journey.

15- Define hyperglycemia and hypoglycemia.

16-What is the significance of juxta glomerular apparatus(JGA) in kidney function.

17- Calcium plays a very important role in the formation of bones.write the role of endocrine glands and

hormone responsible for maintaining calcium homeostasis.

18- What is role of second messenger in hormone action?

19-How are organism like Pseudomonas and Throbacillus of great significance in N2 –cycle.

20- What are the steps involved in the formation of root nodule.

Subject : Physics

Chapter- Thermal properties of matter

1.Define the terms: Heat and Temperature

2.Derive a relation between different temperature scales

3.What do you mean by absolute temperature scale and derive its relation with Celsius and Fahrenheit

scales.

4.Explain thermal expansion in solids and define: (1) coefficient of linear expansion (2) coefficient of

area expansion (3) coefficient of volume expansion

5.Derive relation between all the three coefficient of expansions

6.Define thermal stress and write practical effects of expansion of solids.

7.What do you mean by Calorimetry and define: (1) specific heat capacity (2) molar specific heat (3)

heat capacity

8.Explain the heat transfer by (1) conduction (2) convection (3) radiation

9.State Newton’s law of cooling and derive an expression for it.

Note: Practice of numerical from NCERT and any reference book

Chapter- Thermodynamics

1.State thermodynamics zeroth law and explain it.

2.What do you mean by thermodynamical equilibrium and relate this to zeroth law.

3.State modern concept of temperature.

4.Define the following terms: (1) the equation of state (2) Isothermal process (3) Isobaric process (4)

Isochoric process (5) Adiabatic process (6) Indicator diagram

5.Derive an expression for work done by a gas during expansion (1) Cyclic process (2) Non- cyclic

process

6.State first law of thermodynamics .

7.Define and explain specific heats of an ideal gas and also explain two principal specific heats of a gas.

8.Write and explain applications of first law of thermodynamics.

9.Derive Mayer’s relation.

10.Derive an expression for work done in an isothermal expansion and Adiabatic process.

11.State second law of thermodynamics with Clausius statement and Kelvin-Plank statement.

12.Write the limitations of second law of thermodynamics.

13.Define Heat Engine and explain its different parts.

14.Define Carnot Cycle and Carnot Reversible heat engine.

15.Explain the working of refrigerator.

16.State Carnot theorem.

Note: Practice of numerical from NCERT and any reference.

Subject : Computer Science

I Find the OutPut a) Void main()

{ clrscr(); char nm[]="Hello";

for(int i=0;i<5;i++) {

if(islower(nm[i])) nm[i]=nm[i]+i;

else nm[i]+32;

} cout<<nm; getch();

}

b) void main() {

clrscr(); char nm1[]="HellO DoctoR", nm2[]="@!*#$~.&???"; for(int i=0;i<15;i++) {

if(islower(nm1[i])) nm1[i]=nm2[i]; }

cout<<nm1; getch();

}

c) void main() {

clrscr(); char nm[]="Hello Sir"; for(int i=0;i<9;i++)

{ if(islower(nm[i])) nm[i]=i; else nm[i]=nm[i]+32;

} cout<<nm; getch();

}

d) void main() {

clrscr(); char nm[]="ILovEComputeRScince";

for(int i=0;i<strlen(nm);i++) {

if(nm[i]>'A' && nm[i]%5==0) nm[i]='#'; else if(islower(nm[i])) nm[i]=nm[i]-32; else nm[i]=nm[i+3];

} cout<<" "; puts(nm); getch();

}

e) Void main() { clrscr(); char nm[]="Cabin"; for(int i=0;i<strlen(nm);i++) {

if(nm[i]>'A' && nm[i]<='c') nm[i]=nm[i]+1; if(nm[i]>'a' && nm[i]<='b') nm[i]=nm[i]-32; else nm[i]=nm[i-1];

} cout<<" "; puts(nm);

getch(); }

f) #include<iostream.h> #include<conio.h> Void main() {

char nm[]="TechnoNautiCS!@!";

int i; for(i=0;i<=15;i++) {

if(nm[i]>='a' && nm[i]<='n') nm[i]=nm[i-1]; else nm[i]=nm[i+2]; cout<<nm[i];

} getch(); }

g) #include<iostream.h> #include<conjio.h> Void main() { char nm[]="##!!CSProjects!!##"; int i; for(i=0;i<=17;i++) { if(nm[i]>='C' && nm[i]<='S') cout<<"!"; else nm[i]=nm[i-1]; cout<<nm[i]; } getch(); } II Mulitple choice Questions 1. Which of the following correctly declares an array?

a)intarray[10]; b) int array; c) array{10}; d) array array[10];

2. What is the index number of the last element of an array with 9 elements?

a) 9 b) 8 c) 0 d) Programmer-defined

3. What is a array?

a) An array is a series of elements of the same type in contiguous memory locations b) An array is a series of element c) An array is a series of elements of the same type placed in non-contiguous memory locations d) None of the mentioned

4. Which of the following accesses the seventh element stored in array?

a) array[6]; b) array[7]; c) array(7); d) array;

5. Which of the following gives the memory address of the first element in array?

a) array[0]; b) array[1]; c) array(2); d) array;

6. What will be the output of this program? #include <stdio.h> int array1[] = {1200, 200, 2300, 1230, 1543}; int array2[] = {12, 14, 16, 18, 20}; int temp, result = 0; int main() { for (temp = 0; temp < 5; temp++) { result += array1[temp]; } for (temp = 0; temp < 4; temp++) { result += array2[temp]; } cout << result; return 0; }

a) 6553 b) 6533 c) 6522 d) 12200

7. What will be the output of the this program? #include <stdio.h> using namespace std; int main () { int array[] = {0, 2, 4, 6, 7, 5, 3}; int n, result = 0; for (n = 0; n < 8; n++) { result += array[n]; } cout << result; return 0; }

a) 25 b) 26

c) 27 d) None of the mentioned

8. What is the output of this program? #include <stdio.h> int main() { int a = 5, b = 10, c = 15; int arr[3] = {&a, &b, &c}; cout << *arr[*arr[1] - 8]; return 0; }

a) 15 b) 18 c) garbage value d) compile time error

9. What is the output of this program? #include <stdio.h> using namespace std; int main() { char str[5] = "ABC"; cout << str[3]; cout << str; return 0; }

a) ABC b) ABCD c) AB d) None of the mentioned

10. What is the output of this program? #include <stdio.h> int main() { int array[] = {10, 20, 30}; cout << -2[array]; return 0; }

a)-15 b) -30 c) compile time error d) garbage value