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Computer Science, XII

Comp. Sc. XII

Informatics Practices, XII

IP XII

Maths, XII A

Maths XII

Biology, XII

Class:XII (Shift-II)

Sub: Biology

I

  1. Offspring derived by asexual reproduction are called clones.Justify giving two reasons.
  2. Mention a characteristic feature and function of zoospores in some algae.
  3. All papaya plants bear flowers, but fruits are seen only in some.Explain.
  4. Unicellular organisms are immortal, whereas multicellular organisms are not. justify
  5. a) State the difference between meocite and gamete with respect to chromosome number.
  6. b) Why is a whiptail lizard referred to as parthenogenetic?
  1. The cell division involved in gamete formation is not of the same type in different organisms. Justify.
  2. Exercise questions of Chapter 1’Reproduction in Organisms’

III.Invesigatory Project

Maths, XII

Maths XII

Hindi XII

१) निम्नलिखित विषयों पर निबन्ध लिखिए (३०० शब्दों में )

अ) अनुशासन की समस्या और शिक्षा

आ) इंटर्नेट’ एक वरदान या अभिशाप

इ) मेरा प्रिय कवि

ई) प्रदूषण की समस्या

२) स्वरचित कविता – विषय “प्रकृति”|

३)’स्वच्छ भारत अभियान में छात्रों का योगदान’ इस विषय के महत्व पर प्रकाश डालकर अपने दोस्त के नाम पर एक पत्र लिखिए-

Shift-II

Accountancy XII C

1) Distinguish between profit& loss account and profit& appropriation account.

2) Discuss the main provisions of the Indian partnership act 1932 that are relevant to partnership accounts if there is no partnership deed.

3) Record the following items in the Capital Accounts of Deepa and Shika as per (i) fixed capital Method (ii) fluctuating Capital Method

 

Deepa

Shika

Capital as on 1st April 2004

2,00,000

1,00,000

Drawings during 2004-05

25,000

20,000

Interest on capital

5%p.a

5%.p.a

Interest on drawings

750

600

Salary

12,000

9600

Commission

4000

Share of profit

30,000

15,000

Current account balance on 1st April 2004

5000(Cr)

200(Dr)

(4) A and Bare partners sharing profits and losses in the ratio 3:1. Their capitals at the end of the financial year 2005-06 were Rs.6,00,000 and Rs.3,00,000. During the year 2005-06, A’s drawings were Rs.80,000 and the drawings of B were Rs.40,000 which had been duly debited to partner’s capital accounts. Profit before charging interest on capital for the year was Rs.80,000. The same had also been credited in their profit sharing ratio. B had brought additional capital of Rs.70,000 on October 1st,2005. Calculate interest on capital @ 12% p.a for the year 2005-06.

Date of submission: 5 June 2015 (Shift-II)

Informatics Practices XII C

1. Which communication channel(s) is/are suitable in each of the following situations:

a. Setting up a LAN

b. Transfer of data from a laptop to a mobile phone.

c. Transfer of data from one mobile phone to another.

d. Creating a remote control that can control multiple devices in a home.

e. Very fast communication between two offices in two different countries.

f. Communication in a hilly area

g. Communication within a city and its vicinity where cost of cabling is too high.

2. (a) What is a computer network? What are its advantages?

(b) What is meant be communication channels? Give two examples of guided media and

two examples of unguided media.

3. Differentiate (with examples wherever possible) between :

a. Hub and Switch b. Guided and Unguided media

4. Differentiate between :

(a) radio waves and micowaves (b) Bluetooth and satellite

5. Write the syntaxes of if-else, and switch case statements in java. Explain how each works.

State one sample program for each.

6. Write the syntaxes of for, while and do-while statements in java. Explain how each works.

State one sample program for each.

(Date of submission- First week of June2015)

Computer Science XII A

1.Write the syntax and use of keywords break,continue,goto and exit() function. Explain each with proper examples.

2. What are nested for loops? Write a program to illustrate the use of nested for loop.

3. Write for loop and equivalent while loop for any 5 programming situations.

4. Write a C++ program to input one dimensional integer array and write functions

(i) To find the minimum,maximum, sum and average of elements in the array.

(ii) To search for a particular element in the array.

5. Write program(s) to input a string and

(i) Reverse the string and check if it is a palindrome or not.

(ii) Convert all upper case letters to lower case and vice versa.

6. Solve 2 output questions using random function.

Here date of publishing to be stored as a variable of structure date with members day, month and year. Write a program to accept details of 20 books and also write statements to display all the details of a particular book whose book name is entered by the user.

(Date of submission- First week of June2015)

English XII

1.WRITE A SUMMARY OF THE NOVEL “THE INVISIBLE MAN “.

2. WRITE ARTICLES ON THE FOLLOWING TOPIC

A.LANGUAGE AS A MEANS OF SUPPRESSION

[REF –L-L THE LAST LESSON]

B. CHILD LABOUR [REF-LESSON-LAST SPRING ]

C. THE GREATEST CHALLENGE IS TO OVERCOME FEAR [REF-DEEP WATER].

(Date of submission- First week of June2015)

Economics XII

Date of submission: 5 June 2015

Shift-II

1. Distinguish between market economy and planned economy.

2. What are the central problems of an economy?

3. Define the following: i) Consumer’s Equilibrium.

ii) Utility.

iii) Budget Line.

iv) Marginal Utility.

4. What is diminishing marginal utility? Explain with schedule and diagram.

5. What is indifference curve? Write four features of indifference curve.

6. What is budget line? When does budget line shift?

7. What is demand? Name and explain 9 different types of demand.

8. Which are the exceptions to the law of demand?

9. Distinguish between: i) Normal goods and Inferior goods

ii) Extension of demand and Increase in demand.

iii) Contraction of demand and Decrease in demand.

10. Which are the factors affecting demand?

Work Experience VI-XII (S-II)

Mr Sudhakar Nandanwar, TGT (WET)

Date of submission: 23 June 2014

 

Note- any one for all classes

s. no.

Class

Project/ project report

1.

VI

1.make a simple circuit by using LED, cells of 1.5 volt and wires

2.make a chart on ,precautions while working on electrical system.

3.make a fan by using small motor and battery.

4.collect the pictures of the electrical tools e.g plier ,screw driver, tester, hammer, spanner etc and paste on the chart paper.

5. make a small toy car by using motor, battery.

2.

VII

1 make a quiz board by using LED, battery, buzzer and wires.

2 .make a circuit how to test the conductor and insulator.

3. draw and define the waveform of a.c and d.c

4. collect cables and wires

3.

VIII

1.make a chart on safety rules.

2.make a first aid box

3. connect 3 LEDS in series combination

4.

IX

1.make an electromagnet by using nail,battery and copper wire.

2.write a project report on motor and generator.

5.

X

1.write a project report on thermal power station

2.write a project report on nuclear power station

6.

XII

1.write a project report on rectifier

2.write a project report on motor.

3.assemble a rectifier circuit by using diode ,step down transformer

And associated component.

Physics XII (S-II)

Ms T. L. Bindu, PGT (Phy)

Date of submission: 23 June 2014

Answer the following questions

1. Two insulated charged copper spheres A and B of identical size have charges qA and qB respectively. A third sphere C of the same size but uncharged is brought in contact with the first, then brought in contact with the second and finally removed from both. What are the new charges on A and B?

2. What does q1+q2=0 signify in electrostatics.

3. If the distance between two equal point charges is doubled and their individual charges are also doubled, what would happen to the force between them?

4. Force between two point charges kept at a distance d apart in air is F.If these charges are kept at the same distance in water, how does the electric force between them change?

5. Name the physical quantity whose SI unit is1) N/C 2)J/C ?

6. In an electric field an electron is kept freely. If the electron is replaced by a proton, what will be the relationship between the forces experienced by them?

7. A proton is placed in a uniform electric field directed along the positive X-axis.In which direction will it tend to move?

8. An electric dipole is placed in a uniform electric field. What is the net force acting on it?

9. A dipole of dipole moment p is present in a uniform electric field E .Write the value of angle between p and E for which the torque experienced by the dipole is minimum.

10. If the radius of the Gaussian surface enclosing the charge is halved, How does the electric flux through the Gaussian surface change?

11. Plot a graph showing the variation of coulomb force (F) versus(1/r2),Where r is the distance between the two charges of each pair of charges (1µC,2 µC) and(2 µC ,-3µC).Interpret the graphs obtained.

12. What is the electrostatic potential due to an electric dipole at an equatorial point?

13. A hollow metal sphere of radius 5cm is charged such that its potential on its surface is10V.What is the potential at the centre of the sphere?

14. Write down the relation between electric field and electric potential at a point.

15. In which orientation ,a dipole placed in a uniform electric field is in i) stable equilibrium ii) unstable equilibrium

16. Draw an equi potential surface for a system, consisting of two charges +Q, -Q separated by a distance r in air.

17. 5J of work is done in moving a positive charge of 0.5 C between two points. What is the potential difference between these two points?

Biology XII (S-II)

Ms Maya M., PGT (Biology)

Date of submission: 23 June 2014

 

Individual investigatory project.

Computer Science XII A (S-II)

Mr Baiju Viswanathan, PGT (CS)

Date of submission: 23 June 2014

 

1.Write the syntax and use of keywords break,continue,goto and exit() function. Explain each with proper examples.

2. What are nested for loops? Write a program to illustrate the use of nested for loop.

3. Write for loop and equivalent while loop for any 5 programming situations.

4. (a)With the multiple definitions of single function name, what makes them different.

(b) Compare default arguments with function overloading.

5. Write a C++ program to input one dimensional integer array and write functions

(i) To find the minimum,maximum, sum and average of elements in the array.

(ii) To search for a particular element in the array.

6. Write program(s) to input a string and

(i) Reverse the string and check if it is a palindrome or not.

(ii) Convert all upper case letters to lower case and vice versa.

7. Solve 2 output questions using random function.

8. Create a structure Book to store the following details :

Book name, Author name, price and date of publishing.

Here date of publishing to be stored as a variable of structure date with members day, month and year. Write a program to accept details of 20 books and also write statements to display all the details .

Informatics Practices XII C (S-II)

Mr Baiju Viswanathan, PGT (CS)

Date of submission: 23 June 2014

 

1. Which communication channel(s) is/are suitable in each of the following situations:

a. Setting up a LAN

b. Transfer of data from a laptop to a mobile phone.

c. Transfer of data from one mobile phone to another.

d. Creating a remote control that can control multiple devices in a home.

e. Very fast communication between two offices in two different countries.

f. Communication in a hilly area

g. Communication within a city and its vicinity where cost of cabling is too high.

2. (a) What is a computer network? What are its advantages?

(b) What is meant be communication channels? Give two examples of guided media and

two examples of unguided media.

3. Differentiate (with examples wherever possible) between :

a. LAN and MAN b. MAN and WAN

c. Hub and Switch d. Guided and Unguided media e. Router and gateway

4. Give some examples of domain names and URLs. How is a domain name different

from a URL?What is domain name resolution?

5. Diagramatically show how would you connect 6 PCs, 1 server, 1 printer, and 2

scanners in

a. Star topology b. Bus topology

6. clip_image002

7. The Great Brain Organisation has set up its new Branch at Srinagar for its office and web based activities. It has 4 Wings of buildings as shown in the diagram :

clip_image004

Center to center distances between various blocks

Wing X to Wing Z

50m

Wing Z to Wing Y

70m

Wing Y to Wing X

125m

Wing Y to Wing U

80m

Wing X to Wing U

175m

Wing Z to Wing U

90m

Number of Computers

Wing X

50

Wing Z

30

Wing Y

150

Wing U

15

(i) Suggest a most suitable cable layout of connections between the Wings, and topology.

(ii) Suggest the most suitable place (i.e. Wing) to house the server of this organisation with a suitable reason, with justification.

(iii) Suggest the placement of the following devices with justification: 1. Repeater

2. Hub/Switch

(iv) The organization is planning to link its head office situated in Delhi with the offices at Srinagar. Suggest an economic way to connect it; the company is

ready to compromise on the speed of connectivity. Justify your answer.

8. Define network security. Explain in details the different network security attacks.