JAWAHAR NAVODAYA VIDYALAYA, DHOLPUR, RAJASTHAN

शीतकालीन अवकाश गृहकार्य 2018-19

ववषर्-अर्यशास्त्र

कक्षा-12

iz01 परिर्ोजना कार्यI

iz02 व्यवि अर्यशास्त्र व समवि अर्यशास्त्र के सभी पाठोों को र्ाद किना हैI

Biology home work for winter break 2018-19

Class XII

1 Read and learn lesson/topics taught to you.

2 Complete all written work in notebook.

3 Complete all written work in practical notebook.

4 Read and make a chapter wise (topic wise) list of difficult topics .

5 Complete investigatory project .

6 Try to draw figures and bring ONE figure on separate A4 size papers.

7 Frame and solve at least ten questions from every lesson.

WINTER VACATION HOME WORK (S.St. , History) SESSION 2018-19

Class XII A

Make detailed notes of the first four chapters (Ancient India) and locate important places

(already marked as important from all the chapters been taught) on the outline map of India.

Sub:- English

CLASS XII A&B

1. Demonetisation scheme , launched recently ,will surely help to check the black money.

Write a debate in favour of ,or against ,the motion in 150-200 words.

2. You feel that the facilities for tourism can be improved in India. Write a letter to the Secretary,

Department of Tourism of your state highlighting the need for improving facilities for tourists to

promote the same. Also suggest some facilities that can be provided.

3. The electronic and print media has an advertisement galore. Most of these ads are misleading

and false. Should there be a check on what they claim? Draft an article in 150-200 words.

4. Write a Summary of the poem Keeping Quiet.

5. Practice of note making.

6. CBSE question papers of 2016 (all four sets).

7.

Sub.: Computer Science

Q1. What is the difference between a keyword and an identifier in C++? Give examples of both. Q2. What is a reference variable? What is its usage? Q3. Write two advantages of using include compiler directives. Q4. Differentiate between a Logical Error and Syntax Error. Also give suitable examples of each in C++. Q5. What is the difference between Global Variable and Local Variable? Q7. Differentiate between a Call by Value and Call by Reference, giving suitable examples of each?

CLASSES AND OBJECTS Q1. Write four attributes associated with declaration of classes. Q2. Define data members and member functions. Q3. Write the scope rules of members of a class. Q4. Define a class employee with the following specifications; Private members of class employee : empno integer ename 20 characters basic,hra,da float netpay float calculate( ) A function to calculate basic + hra + da with float return type Public member functions of class employee : havedata( ) function to accept values for empno, sname, basic , hra ,da and invoke calculate( ) to calculate netpay dispdata( ) function to display all the data members on the screen . Q5. Define a class Student for the following specifications : Private members of the Student are : roll _ no integer name array of characters of size 20 class _ st array of characters of size 8 marks array of integers of size 5

Sub.: Physics

1. State law of conservation of charge. 2. Write electrostatics force law. 3. Write vector form of Coulomb’s law. 4. State Superposition Principle. 5. Explain continuous charge distribution & charge densities. 6. Define Electric Field and its S.I. unit. 7. Write properties of Electric Field of lines. 8. Draw electric field of lines for

(i) Positive charge (ii) Negative charge

9. Explain electric dipole and its nature. 10. Derive a formula for torque experienced by electric dipole placed in uniform electric field. 11. Prepare a working model for physics.

12. Solve at least two numericals for each formula of electrostatics as asked in C.B.S.E. previous years exam.

Sub.: Chemistry

1. To write and learn 30 questions from each lesson of theoretical portion of NCERT.

2. To write and learn 30 questions from each lesson of theoretical portion other than NCERT.

3. To write and learn 15 numerical questions from those each lessons which have numerical problems.

4. To analyze and write questions answers of any 3 last year’s CBSE question papers

5. To cover the following topics/lessons from XI std syllabus-

(i) Some basic concepts of chemistry

(ii) Molecular Bonding and molecular structure

(iii) classification of elements

(iv) Equilibrium

(v)Redox reactions

(vi) General Organic Chemistry