Sample paper

PHYSICAL SCIENCE

I ANSWER THE FOLLOWING QUESTIONS.                                                        5 x 2 = 10 M

1. Define Hybridisation, Octet rule?

2. Define Catenation, Isomerism and Allotropy?

3. Define Roasting, Calcination and Smelting?

4. State Kirchhoff's Law and Ohm's Law?

5. State Faraday's law and Lenz's law?

II. ANSWER THE FOLLOWING QUESTIONS.                                                     7 X 4 = 28 M

6. Explain the formation of the following molecules using valence bond theory.   a) Formation of N2 molecule.    b) Formation of O2 molecule. 

7.What is the activity series? How it helps in extraction of metals? 

8. Explain the cleaning action of soap?

9. Distinguish between Esterification and Saponification?

10.Write an activity to show that air and water are necessary for corrosion?

11. How do you verify that V/I is constant?

12. Explain the working of electric motor?

III. ANSWER THE FOLLOWING QUESTION.                                                     1 X 2 = 2 M 

13.  Draw a neat diagram of Reverberatory Furnance and labelled the parts? 

ALL THE BEST