Heat
1. Two bodies at different temperatures are placed in contact. State the direction in which
heat will flow
2. Define temperature and give its S.I units?
3. Why does a piece of ice when touched with hand appears cold?
4. Name two substances which contract on heating
5. Distinguish between Heat and Temperature
6. State three factors which affect the increase in length of rod on heating.
7. Loops are joined in metal pipes. Why?
8. The unit calorie is related to _____________
9. The unit of coefficient of linear expansion is ______________
10. State the effect of temperature on the density of a substance.
11. What do you mean by anomalous expansion of water?
12. What do understand by real and apparent expansion of a liquid.
13. Write a relation between Celsius and the Fahrenheit scales of temperature
14. What do you understand by zero on kelvin scale. Write its value?
1. Two bodies at different temperatures are placed in contact. State the direction in which
heat will flow
2. Define temperature and give its S.I units?
3. Why does a piece of ice when touched with hand appears cold?
4. Name two substances which contract on heating
5. Distinguish between Heat and Temperature
6. State three factors which affect the increase in length of rod on heating.
7. Loops are joined in metal pipes. Why?
8. The unit calorie is related to _____________
9. The unit of coefficient of linear expansion is ______________
10. State the effect of temperature on the density of a substance.
11. What do you mean by anomalous expansion of water?
12. What do understand by real and apparent expansion of a liquid.
13. Write a relation between Celsius and the Fahrenheit scales of temperature
14. What do you understand by zero on kelvin scale. Write its value?
15. Express 100 degree Fahreinheit in degree celsius and kelvin?
16. Express 100 K in degree celsius?
17. Name the liquid which is good conductor of heat
18.Name different modes of transfer of heat.
19. Name the material used for making the handles of cooking utensiles. Give reason for your answer.
20.Write some consequences of convection?
21. By the process of convection, heat always transferred vertically upwards. Give reason.
22. Why is a Ventilator provided in a room?
23. Write three differences between conduction, convection and radiation
