CLASS XI

English

Do Wren and Martin Part-I Complete.

Accountancy Create an imaginary business organisation and develop 30 transactions for it. Afterward pass journal entries for the same.

Business Studies Revise chapters 1&2

Frame 10 one mark questions from each chapter and answer them.

Chemistry Answer the following

1. A solution is prepared by adding 2 gram of a substance „A' to 18 gram

of water . calculate the mass percentage of the solute .

2. Hydrogen reacts with nitrogen to produce Ammonia . according to the

equation

3H2 + N2 2NH3

Determine how much Ammonia would be produced if 100g of N2

reacts?

3. A compound contains 4.07 % hydrogen 24.27% C and 71.65%

Chlorine. its molar mass is 98.96g.what are its empirical and molecular

formula?

4. The reactant which is entirely consumed in reaction is known as

limiting reagent. In the reaction 2A+4B 3C+4D, when 5 moles of A

react with 6 moles of B, then

a) Which is the limiting reagent.

b) Calculate the amount of C formed?

5. A vessel contains 1.6 grams of O2 at STP (273. 15k, 1 atm pressure).

The gas is now transferred to another vessel at constant temperature

where pressure becomes half of the original pressure . Calculate

a) New volume of the vessel.

b) Number of molecules of dioxygen.

6. CaCO3 reacts with aqueous HCl to give CaCl2 and CO2 according to the

reaction given below

CaCO3(S) + 2HCl(aq) CaCl2(aq) + CO2(g) + H2O(l)

What mass of CaCl2 will be formed when 250 ml of 0.76m HCL reacts

with 1000g of CaCO3? Name the limiting reagent. Calculate the

number of moles of CaCl2 formed in the reaction.

7. Account for the following

a) Cr has configuration 3d54s1 and not 3d44s2

b) Bohr‟s orbit are called stationary orbits.

8. Calculate the wavelength of an ē moving with a velocity of 2.05 x 107

m/s.

9. How many neutrons and protons are there in the following nuclei :-

a) 𝐶613 c) 𝑀𝑔12

24

b) 𝑂816 d) 𝐹𝑒26

56

10. Among the following pairs of orbital, which orbital will experience the

larger effective nuclear charge.

a) 2s and 3s

b) 4d and 4f

c) 3d and 3p

MATHEMATICS COMPLEX NUMBERS

Q1. Perform the indicated operations and write the result in the form of x+iy 1. (7-2i)-(3+2i)+(7+8i) (Ans : 11 + 4i)

2. i25i225i838 (Ans: 8+7 2 i)

3. 3-4i+2i(8+7i) (Ans: -5-9i)

4. (7-2i)-4+i)+(-3+5i) (Ans: 2i)

5.

i

3

4i

3

14i

3

7

3

1 (Ans: i

3

5

3

17 )

6. (3+2i)(2-i) (Ans:8+i)

7. 4i-2

4i3 (Ans: i

2

1- )

8. 25191632 4i6i3i6i2i (Ans: 1+4i)

9. i22i1

3i22i3

(Ans: i

25

16

25

63 )

10. 5-2-

1

(Ans:

9

5-

9

2- i)

Q2. Find multiplicative inverse of the following complex numbers.

1. 2-3i Ans: i13

3

13

2

2. 3i5 Ans: i14

3

14

5

3. 2i32 Ans: i49

34

49

1

4. (1-i)-(2+5i) Ans: i37

6

37

1

5. 36364 Ans: i120

1

60

1

6. 25191632 4i6i3i6i2i

7. 94 Ans: i25

3

25

4

8. 25i6 Ans: i3721

60

3721

11

9. (3+i)(2+5i)(1-i) Ans: i145

4

290

9

10.

i5

2i33i2i

Ans:

i

13

1

13

5

Q3. Show that

1.

i25

8-

i2

1

i2

122

2.

59i19

i1

8i78i-2

Q4. Simplify

1. i1

2

i2

2

i1

2

2. 14n

i1

i1

3. 12(cos150°+sin150°)÷3(cos60°+isin60°)

Q5. Find conjugate of the following complex numbers.

1. 4+5i

2. 432 iiii1

3. 37t

4. 2i1

5. 253 87-42 iii

6. 93 1186524 iii

7.

5i2

i1i14

8. ii

ii

125125

125125

9.

Nni-1

i112n

12n

Q6. If iyxidc

iba

Prove that

22

2222

dc

bayx

Q7. If 2ibaiyx then show that 22222 bayx

Q8. Find modulus of following complex numbers

1. 2i2

7i1

2. isinθcosθ1

isinθcosθ1

3. 23

74

2i1i1

i1i2

4.

2102

272

i7i4

i10i1

i

i Ans:

5000000

101

5.

nεεi1

i112n

12n

Ans: 2

Q9. Find square root of the following complex numbers.

1. 7+24i Ans: 3i4

2. -4-3i Ans:

i

2

3

2

1

3. 7-24i Ans: 3i4

4. i743 Ans: 2i7

5. 2i Ans: i1

6. 1-I Ans:

i

2

12

2

12

7. 4i5

3i2

4i5

3i2

Ans:

41

2

Q10. Find modulus and principal argument of the following complex numbers.

1. 4i34 Ans: 6

Π8,

2. 2i-1-1

2i1 Ans: 1, 0

3. 7

12

i-1

i1 Ans: ,8

4. 3i1

2i1

Ans:

4

3,

2

1

5. sin30 icos3002

5 Ans:

4

Π,

22

5

6. sin50°+ i cos50° Ans: 9

2Π1,

7. cos70°+ I cos20° Ans: 18

7Π1,

8. 1 + i Ans:

4

Π,2

9. 1 – i Ans:

4

Π,-2

10. -1 + I Ans:

4

3Π,2

11. -1 – i Ans:

4

3Π,-2

12. i3 Ans:

6,2

13. 3i1 Ans:

3,2

14. i3 Ans:

6

5,2

15. i3 Ans:

6

5,2

16. i1

i1

Ans:

2

Π1,

17. 1i1

Ans:

4,

2

1

18. i21

i31

Ans:

4

3Π,2

19. 2

i2

7i1

Ans:

4

3Π,2

20. 1sinθ icosθsinθ icosθ

Ans: (1,0)

21.

3

Πsin i

3

Πcos

1i Ans:

12

5,2

Q11. Draw the Argand diagram of the set

i. {1-2i,1+2i,2-I,2÷i}

ii. {1, 4, -I, -2i, 0}

Q12. Show that images of Complex numbers -2 + 3i , 1 + 2i and 7 are collinear.

Q13. Show that images of complex numbers 4 + 4i, 3 + 5i, -1 –I form a rt. Angled

triangle.

Q14. Show that points representing 3 + 3i, -3 -3i, i3333 on the Argand Plane are

the vertices of an equilateral triangle. Modulus of complex no means dist of the

pt. from the origin.

ECONOMICS

Dear students develop a project, as per the suggested project guidelines. Case studies of

a few organisations / outlets may also be taken up.

Only ONE comprehensive project from the following topics is to be done:

(i) A report on demographic structure of your neighborhood.

(ii) Changing consumer awareness amongst households.

(iii) Dissemination of price information for growers and its impact on consumers.

(iv) Study of a cooperative institution: milk cooperatives, marketing cooperatives, etc.

(v) Case studies on public private partnership, outsourcing and outward Foreign Direct

Investment.

(vi) Global warming.

(vii) Designing eco-friendly projects applicable in school such as paper and water

recycle.

Students, you may explore the information relating to the title, collect primary and

secondary data, analyse the data. Present the project using various statistical tools and

their interpretation and conclusion.

NOTE :

Only handwritten project will be accepted as per CBSE instructions

The project must include the following:

A) Title, Acknowledgement & Index

B) Data from a primary or secondary source

C) Presentation and analysis of data

D) Interpretation

E) Conclusion

F) Bibliography

Project should have minimum 30 -40 pages.

The project carries 20 marks in final examination.

INFORMATION PRACTICES

NOTE : kindly do the questions in computer notebook & practical assignments in

practical file.

TYPE B: SHORT ANSWER QUESTION

1. How are events, message, methods and properties interrelated?

2. Compare the following?

1. ?..: .. & if… 2. While loop &do..while loop.

3. What do you mean by Scope of variables? Explain with an example.

4. What are operators? Discuss briefly different types of operators available in Java.

5. Rewrite the following fragment using switch: if (ch== „E‟) e++ ; if

(ch== „W‟) w++ ; if (ch== „N‟)

n++ ; if (ch== „S‟) s++ ; else

unknown++ ;

6. How may times are the following loops executed? (a) x = 5 ; y = 50 ; (b) int m = 10, n= 7;

while(x <= y){ while(m % n >= 0) {

x = y/x ; . . . . . . .

. . . . . . . . . . m = m + 1; } n = n + 2;

. . . . . . . . . .

} 8. Given the following code fragment:

i=2; do{ System.out.println (“”+i); i += 2;

} while (i< 51); jOptionPane.showMessageDialog( null, “Thank you” );

Rewrite the above code using a while loop.

9. Given the following code fragment :

i = 100 ; while (i> 0) System.out.println( i--);

jOptionPane.showMessageDialog( null, “Thank you” );

Rewrite the above code using a do…while loop.

10. Rewrite following while loop into a for loop int stripes = 0;

while (stripes <= 13)

{ if (stripes %2 == 2) System.out.println(“Colour code Red”);

else System.out.println(“Colour code Blue”);

stripes = stripes + 1; }

11. What will be the output of the following code fragment when the value of ch is

(a) „A‟ (b) „B‟ (c) „D‟ (d) „F‟

switch (ch)

{ case „A‟ : System.out.println (“Grade A”);

case „B‟ : System.out.println (“Grade B”);

case „C‟ : System.out.println (“Grade C”);

break;

case „D‟ : System.out.println (“Grade D”);

default : System.out.println (“Grade F”); }

XI (Pg. 11)

P R A C T I C A L – A S S I G N M E N T S

Experiment No. 1:

Objective: Understanding and use of variables of float and other data types. Task: Develop a simple Calculator application as per given screen snapshot, to implement +, -,

x and / operations. The text boxes get cleared when „C‟ button is clicked.

Experiment No. 2:

Objective: Understanding and use of Nested conditions in the Real life applications. Task: A Quick Fox Transport Co. wants to develop an application for calculating amount

based on distance and weight of goods. The charges (Amount) to be calculated as per rates given below.

Distance Weight Charges per Km.

>=500 Km >=100 kg. Rs. 5/-

>=10 and <100 kg. Rs. 6/-

< 10 kg. Rs. 7/-

<500 Km >=100 Kg. Rs.8/-

<100 Kg. Rs.5/-

Experiment No. 3:

Objective: Understanding the use of loops and mathematical operations. Task: Develop an application to compute the sum of digits for given number.

XI (Pg. 12)

Experiment No. 4:

Objective: Understanding and developing a logic to solve a problem. Use of nested loops and

breaking it prematurely. Task: Develop a Prime Number Generator Application which generates Prime numbers for

given range. Prime numbers are those numbers which are divisible by one or itself

only.

Experiment No. 5:

Objective: Displaying images on a Label and Text Area control. Task: Develop an e-Learning application with images and text information as per given screen

shot.

XI (Pg. 13)

Experiment No. 6:

Objective: Use of Slider or Scroll bar control to get user input and using it some calculation. Task: Develop a Temperature Converter application which converts selected Celsius temperature

on a scale and displays it equivalent Fahrenheit temperature.

Experiment No. 7:

Objective: Understanding and using the Radio Button in Real-life application to determine the selection

of choices and calculations accordingly. Task: The Entertainment Paradise- A theater in Delhi wants to develop a computerized Booking

System. The proposed Interface is given below. The theater offers different types of seats.

The Ticket rates are- Stalls- Rs. 625/-, Circle- Rs.750/-, Upper Class- Rs.850/- and Box- Rs.1000/-. A discount is given 10% of total amount if tickets are purchased on Cash. In case of credit card holders 5% discount is given.

Experiment No. 8:

Objective: Understanding the use of various controls in Real life application. Task: ABC Consultancy is a placement organization, assists job seekers. The Entry form has to be

designed to facilitate the Registration Process with following features.

XI (Pg. 14)

1.When Submit button is pressed, the following things should happen. (a) If Post Graduate is checked, the 10+2 and Graduate checkboxes should also get

selected automatically. (b) If Graduate is checked, the 10+2 checkboxes should also get selected. (c) A Message Box with “Hello Mr. ….. you are registered” or “Hello Miss… ….. you are

registered” as per Gender of candidate. 2. When Clear Button is pressed, all the text boxes, check boxes gets cleared, and Male

and Science option is selected by default.

Experiment No. 9:

Objective: Understanding the need of Real life applications. Task: The Milton Casting Company has developed an application to calculate the wage of its workers.

The following functionalities are expected. 1. The Wage rate are Rs.150/- (per day) for male and Rs.130/- for females. 2. An additional amount Rs.50/- per day is paid if worker is skilled. 3. When Calculate Button is clicked the Total wage amount is calculated and displayed

in relevant Text box. 4. When Clear Button is clicked, all the text boxes get cleared and Male option is

selected.

Experiment No. 10:

XI (Pg. 15)

Objective: Understanding the need of Real life applications. Task: The Fashion Gallery- a leading garments shop wants to develop an application to calculate

the discount Amount. The following functionalities are expected. 1. The discount is given on the basis on payment mode. Cash – 10%, Cheque – 8% and Credit – 5% of bill amount. If Bill amount is more than 10000 then additional 5% discount is also given. 2. Initially, Calculate Net Amount is disabled, but when user click on Calculate Discount

button the discount amount is calculated and displayed, and Calculate Net Amount

Button is enabled.

3. When Calculate Net Amount is clicked the Net Amount is calculated and displayed in

Net Amount Text Box. 4. When Exit Button is clicked, a Confirm dialog appears and application is closed only

when Yes option in confirm dialog is selected.