Question

1. Convert 300K into Celsius scale

2. Calcium sulphate hemihydrates is called as………………

3. Define Modern periodic law?

4. Statement 1: Calcination is a process of heating the ore strongly in the absence of air or

oxygen

Statement 2: Roasting is a process of heating the ore strongly in a free supply of air or oxygen

Write the correct answer of the following in your answer booklet

A) Both Statements are correct B) Statement 1 is only correct

C) Statement 2 is only correct D) Both Statements are wrong

5. Lens formula

a) 1/f = 1/v + 1/u b) 1/f = 1/v - 1/u c) 1/f = 1/u – 1/v d) f = vu/v+u

6. Write any one application of Faraday’s law of induction

SECTION - II

Note: 1. Answer all the Questions

2. Each Question carries 2 Marks 4x2=8

7. Complete the ray diagram of Converging lens in your answer booklet

8. Write any two questions to understand the magnetic field lines are closed lines.

9. An element has atomic number 19. Where would you expect this element in the periodic table

and why?

10. Write the parts of the Reverberatory furnace​

Answer 1

Answer:

1. 27°C

Explanation:

because K= -273°C