Slip Test -1

                                        HEAT

      

              SLIP TEST -1                 MARKS:25

I. ANSWER THE FOLLOWING QUESTIONS                  5 X 1 = 5 M

1. Define i) Dew ii) Humidity?

2. Define latent heat of vaporization?

3. What is principle of method of mixtures?

4. Convert 353 K in to degree centigrade?

5. Define calorie?

II. ANSWER THE FOLLOWING QUESTIONS       4 X 2 = 8 M

6. Why do we get dew on the surface of a cold softdrink bottle kept in open air?

7. What would be the final temperature of a mixture of 50g of water at 20oC temperature and 50g of water at 40oC temperature?

8. Explain why dogs pant during hot summer days using the concept of evaporation?

9. Why do we sweat while doing work?

III. ANSWER THE FOLLOWING QUESTIONS    3 X 4 = 12 M

10. How do you find the specific heat of a solid experimentally?

11. Write the differences between evaporation and boiling?

12. Calculate required heat energy to change 12g of ice at -10℃ into water vapour at 100℃.

Tags: Heat, Test, Sliptest, Evaporation, Principle of method of mixtures,Dew,Humidity,Boiling.