summer vacation assignments for class xii homework

Summer Vacation Assignments for Class XII

CLASS XII (COMMERCE AND ARTS)

SUBJECT- ECONOMICS HOMEWORK- Prepare 10 multiple questions (1 mark) 10 very short questions –(3 marks) 10 short questions –(4) marks and long questions (6 marks) from INTRODUCTIONS AND CONSUMERS EQUILIBRIUM CHAPTER

CLASS XII (ARTS)

SUBJECT- HISTORY HOMEWORK- 1. Watch The Mahabharat TV serial. 2. Read Jatak stories and stories from The Mahabharat. 3. Mauryan Administration 4. Read all the sources of Theme I and Prepare 5 questions from each passage. (Minimum 15 sources)

SUBJECT- Political Science HOMEWORK- 1. Collect more Information on

(a) J.L. Nehru (b) Ahmed Sukarno (c) Kwame Nkrumah (d) Joseph Briz Tito (e) Gamal Abdul Naseer

2. NAM: Formation, Aims and objectives, Relevance in the unipolar world 3. Political Parties of India:

a) Names, Formation b) Aims and Objectives

4. Collect news paper cuttings on Assembly Election in Bengal , Assam ,Kerala and Tamilnadu

CLASS XII (COMMERCE)

SUBJECT- ACCOUNTANCY

HOMEWORK- Accounting for partnership firms – fundamentals 1) Pg – 1.51 Ill. 34 , Ill. 35 2) Pg – 1.54 Ill. 38 3) Pg – 1.56 Ill. 40 4) Pg- 1.59 Ill. 45 5) Pg – 1.64 Ill. 52 6) Pg – 1.67 Ill. 56 7) Pg – 1.75 Ill. 65 8) Pg – 1.77 Ill. 67 9) Pg – 1.78 Ill. 68 10) Pg – 1.81 Ill. 71 11) Pg – 1.104 Q. 29 12) Pg – 1.106 Q. 34, Q. 35 13) Pg – 1.109 Q. 44 (b), Q.45 14) Pg – 1.113 Q. 57 15) Pg – 1.115 Q. 67 16) pg – 1.116 Q.68, Q. 69, Q.70, Q.71 17) pg – 1.123 Q. 97 18) pg – 1.124 Q.99 19) pg – 1.126 Q. 106 20) pg – 1.135 Q. 1

21) pg – 1.137 Q.18, Q. 20


SUBJECT- Business Studies

HOMEWORK- Nature and significance of management Pg – 32 Q.19 pg – 37 to pg – 40

Principles of management Pg – 64 Q.6 pg – 66 Q.13, Q.14 Pg – 67 Q.21 Pg – 72 to pg – 78

CLASS XII (COMMERCE)

SUBJECT- INFORMATICS PRACTICES

HOMEWORK- Networking and Open Standards

1. Define a network? A school with 20 stand-alone computers is considering networking them together and

adding a server. State 2 advantages of doing this.

2. Which of the following is not a feature of networking?

(i) Resource sharing

(ii) Uninterrupted power supply

(iii) Reduced cost

(iv) Reliability

3. Ram is interested in transferring songs from his mobile to Shyam mobile. Suggest two suitable wireless

options he may use for doing the same.

4. Name the most suitable wireless communication channel between two offices in two different countries.

5. Why is a switch called an intelligent hub?

6. Two neighbourhood schools, at a distance of 120 meters from each other, decide to join their LANs using

UTP cable so that they can share their e-learning resources. But after joining their LANs they are not able to

share the resources due to loss of signal in-between. Which device should they use so that signal is amplified

in-between?

7. What is client server computing? Can you give example of a real life situation that uses client server

computing?

8. . Tara Nathani wants to upload and download files from/to a remote Internet server, write the name of the

relevant communication protocol, which will let her do the same.

9. An organization is planning to link its sale counter situated in various parts of the same city, which type

of network will be formed?

10. Two doctors in the same room have connected their Palm Tops using Bluetooth for working on a Group

presentation. Out of the following, what kind of Network they have formed? LAN, MAN, PAN, WAN.

11. What is the purpose of using a MODEM?

12. Which device is used to connect different types of networks. It performs the necessary translation so that

the connected networks can communicate properly.

13. Grijesh is confused about Wi-Fi. Whether it is a

(i) Type of network cable

(ii) Set of popular technologies and standards for wireless computer networking.

(iii) Set of computer programs that help people log in to the Internet.

14. On a network, this is your computer’s unique hardware number. What is it?

15. What is MAC address? Give an example.

16. What is IP address? How is it useful in computer security? Write one example of IP address.

17. This is the mechanism that obtains IP address using a URL of a website. What is it?

18. Define ‘Domain Name Resolution’.

Summer Vacation Assignments for Class XII 19. Jai Khanna is confused between the terms Domain Name and URL. Explain the difference with the help

of appropriate examples of each.

20. Name the protocol which provides a set of rules to transfer files, videos, images over world wide web.

21. Write one advantage and one disadvantage of using Optical Fiber cable.

22. Which communication medium is to be suggested for very effective and fast communication in guided

medium?

23. Raj Kamal International School is planning to connect all computers, each spread over distance within

45 meters. Suggest an economical cable type having high speed data transfer, which can be used to connect

these computers.

24. Arrange the following communication channels in ascending order of their data transmission rates:

Ethernet Cable, Optical Fiber, Telephone Cable, Coaxial Cable.

25. It is a technology on computer networks whose purpose is to prevent unwanted networking connection

according to some filtering/blocking rules. What is it?

CLASS XII (SCIENCE)

SUBJECT- CHEMISTRY

HOMEWORK- THE SOLID STATE 1. What is meant by the term ‘forbidden zone’ in reference to band theory of solids? 2. ‘Crystalline solids are anisotropic in nature.’ What does this statement means? 3. Write a feature which will distinguish a metallic solid from a ionic solid. 4. Express the relationship between atomic radius(r) and the edge length(a) in the b.c.c. unit cell. 5. What is a semi-conductor’? Describe the two main types of semiconductors and contrast their

conduction mechanism. 6. Explain the following with suitable example:

(a)Ferromagnetism (b)Ferrimagnetism 7. Define unit cell and coordination number in relation to crystalline solids.

8. Iron has a body centered cubic unit cell with a cell dimension of 286.65pm. The density of iron is

7.874g/cm3 . Use this information to calculate Avogadro’s number.(At. Mass of Fe= 55.845u)

9. Silver crystallizes with face centered cubic unit cell. Each side of this unit cell has a length of 409pm.

What is the radius of silver atom? Assume the atoms just touch each other on the diagonal across

the face of the unit cell.

10. Tungsten crystallizes in body centered cubic unit cell. If the edge length of the unit cell is 316.5pm,

what is the radius of tungsten atom?

11. Calculate the distance between Na+ and Cl- ions in NaCl crystal if its density is 2.165gcm-3 (Molar

mass of NaCl=58.5g mol-1 ; NA = 6.022 X 1023 )

12. A element has a body centered cubic(bcc) structure with a cell edge of 288pm. The density of the

element is 7.2g/cm3 . How many atoms are present in 208g of thye element?

CLASS XII(A,B,C & D)

SUBJECT- ENGLISH HOMEWORK- Extensive Reading of the three Texts:

1. Flamingo

2. Vistas

3. The Invisible Man

(Read these books thoroughly from the beginning to end.)

Summer Vacation Assignments for Class XII WRITING SKILLS: Write as much as possible on the following genres of writing: 1. Notice

2. Poster

3. Advertisement

4. Invitation(Informal)

5. Article

6. Report

7. Formal letter

8. Speech

9. Debate

Literature: 1. Describe Mr M.Hamel with reference to his confession. 2. Who was Master Franz? 3.Why did Kamala Das feel helpless? 4. What was the effect of war on Alsace? 5.What was the effect of the pigeon episode in the story? 6. What can be done to save the interest of the linguistic minority? 7. What is the role of language in the life of a man? 8. Describe the figures of speeches used in the poem by Kamala Das. 9.Have you ever changed your mind on any decision of your life? If so, write about it in brief. 10.Comment on the appropriateness of the title: The Last Lesson.

CLASS XII (SCIENCE)

SUBJECT- PHYSICS

Questions of Electrostatics 1. A spherical conducting shell of inner radius r1 and outer radius r2 has a charge ‘Q’. A charge

‘q’ is placed at the centre of the shell. (a) What is the surface charge density on the (i)

inner surface, (ii) outer surface of the shell? (b) Write the expression for the electric field

at a point x > r2 from the centre of the shell.

2. Keeping the voltage of the charging source constant, what would be the percentage change in the energy stored in a parallel plate capacitor if the separation between its plates were to be

decreased by 10%? 3. (a) The given figure shows a network of five capacitors connected to a 100 V supply. Calculate

the total charge and energy stored in the network.

4. A point charge causes an electric flux of – 1.0 X 103

N m2/C to pass through a spherical Gaussian

surface of 10.0 cm radius centred on the charge. (a) If the radius of the Gaussian surface were

doubled, how much flux would pass through the surface? (b) What is the value of the point

charge?

5. In a medium the force of attraction between two point electric charges, distance d apart, is F.

Summer Vacation Assignments for Class XII What distance apart should these be kept in the same medium so that the force between them

becomes (i) 3F, (ii) F/3? 6. The flux of the electrostatic field through the closed spherical surface S’ is found to be 4

times through the closed spherical S. Find the magnitude of the charge Q. Given q1 = 1 μC, q2 = -

2 μC, q3 = 9.854 μC.

7. A parallel plate capacitor with air between the plates has a capacitance of 8 pF (1 pF = 10-12 F).

What will be the capacitance if the distance between the plates is reduced by half, and the space

between them is filled with a substance of dielectric constant 6? 8. In a hydrogen atom, the electron and proton are bound at a distance of about 0.53 A:

(a) Estimate the potential energy of the system in eV, taking the zero of the potential

energy at infinite separation of the electron from proton. (b) What is the minimum work required

to free the electron, given that its kinetic energy in the orbit is half the magnitude of

potential energy obtained in (a)?(c) What are the answers to (a) and (b) above if the zero of

potential energy is taken at 1.06 A separation?

9. Two charged conducting spheres of radii a and b are connected to each other by a wire. What is

the ratio of electric fields at the surfaces of the two spheres? Use the result obtained to

explain why charge density on the sharp and pointed ends of a conductor is higher than on its

flatter portions.

10. An electrical technician requires a capacitance of 2 μF in a circuit across a potential

difference of 1 kV. A large number of 1 μF capacitors are available to him each of which can

withstand a potential difference of not more than 400 V. Suggest possible arrangement that

requires the minimum number of capacitors. 11.

12


13

14

NCERT QUESTIONS

1. Additional exercises of unit I – Electric Charges and Fields. 1.25 To 1.34 (page no. – 48 to 50) [Total =10]

2. Additional exercises of unit 2 – Electrostatic Potential and Capacitance. 2.12 To 2.37 (page no. – 88 to 92) [Total = 26]

CLASS XII (SCIENCE)

SUBJECT-BIOLOGY

1. Banana is a true fruit and also a parthenocarpic fruit. Justify. 2. The flower of brinjal is referred to as chasmogamous, while that of beans is

cleistogamous. How are they different from each other? 3. Draw a labeled diagram of the sectional view of mature pollen grain of angiosperm.

Explain the function of any two of its parts. 4. How does floral pattern of Mediterranean orchid Ophrys guarantee cross pollination? 5. Arrange the following words in correct evolutionary sequence:

Pollen grain, sporogenous tissue, microspore tetrad, microspore mother cell. 6. What is triple fusion? Where and how does it take place? Name the nuclei involved in

tripe fusion.

Summer Vacation Assignments for Class XII LONG ANSWER QUESTIONS

1. Write an essay on the development of female gametophyte. Illustrate the answer with suitable diagrams.

2. Draw a labeled diagram of a mature ovule, showing its internal structure. 3. Describe the structure of a typical monosporic embryo sac found in flowering plants. 4. ‘Incompatibility is a natural barrier in the fusion of gametes.’ Justify the statement. 5. A) Draw a longitudinal section view of a typical anatropous ovule to show the site

where double fertilization takes place. Label any four major parts of ovule. B) How do male gametes that are present in the pollen grains reach the site mentioned you in part (A) to cause double fertilization.

6. A) Draw the embryo sac of a flowering plant and label central cell, chalazal end of the embryo sac and synergids.

B) Name the cell that develops into an embryo sac and explain how this cell leads to the formation of embryo sac. Also mention the roles played by te various cells of embryo sac.

7. A) Draw a labeled diagram of the internal structure of a mature embryo sac of an angiosperm.

B) That the events that occur in a functional megaspore leading to the development of a matured embryo sac in an angiosperm.

8. Draw a neat and well labeled diagram of pollen sac. VALUE BASED QUESTIONS

1. Name the various types of haploid cells in mature female gametophyte of an angiospermic plant. Why the zygote is diploid and primary endosperm nucleus is triploid in angiosperms.

2. Differentiate between perisperm and pericarp. What are coleoptiles and coleorhizae.


Class XII SCIENCE Section A

Computer Science

( 2 marks Questions )


( 3 Marks Questions ) Q.11.

Q.12.

Q.13.

Summer Vacation Assignments for Class XII Q.14.

Q.15.

Note : All CS Students are informed to select their Investigatory Projects as per CBSE Curriculum and as instructed.


CLASS XII (SCIENCE AND COMMERCE)

SUBJECT-MATHEMATICS

Book - N.C.E.R.T

1. Write & Learn - All formula and basic concept of relation and function , trigonometry , limits

and derivatives from N.C.E.R.T Class XI.

2. Write & Learn - All formula and basic concepts from N.C.E.R.T Class:- XII.

CHAPTER 1. Relations and functions CHAPTER 2. Inverse Trigonometric Functions CHAPTER 3. Matrices CHAPTER 4. Determinants

3. Solve all examples of chapter 1,2,3,4, from N.C.E.R.T Class:- XII.

4. Solve all miscellaneous exercise of chapter 1,2,3,4, from N.C.E.R.T Class:-XII.

5. Solve five C.B.S.E BOARD QUESTION from each chapter 1,2,3,4 from C.B.S.E MODEL TEST PAPERS.

Total number of Pages = 12

Summer Vacation Home Assignment for Class XII given on 02/05/2016

Senior Secondary Section

summer vacation assignments for class xii homework

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