Available Answers

1. 1.

   What is heat? Write its S.I. unit.

2. 2.

   Two bodies at different temperatures are placed in contact. State the direction in which heat will flow.

3. 3.

   Define temperature and write its S.I. unit.

4. 4.

   Why does a piece of ice when touched with hand, appear cool? Explain.

5. 5.

   Distinguish between heat and temperature.

6. 6.

   What do you understand by thermal expansion of a substance?