Physics Practice: Heat Transfer (Mock Test 2 - Intermediate)
1. Which mode of heat transfer involves the actual movement of particles of the medium?
2. The process by which heat from the Sun reaches the Earth through vacuum is:
3. In which of the following materials does conduction take place most efficiently?
4. Why are ventilators in a room usually located near the ceiling?
5. Which of the following is a result of the high "Specific Heat Capacity" of water?
6. A bimetallic strip made of Brass and Iron is heated. It bends towards the iron side because:
7. The anatomical design of a thermos flask includes a vacuum between two walls to prevent heat loss by:
8. Which surface is the best absorber of radiant heat?
9. During the night, the breeze blows from the land towards the sea. This is called:
10. Most liquids ________ on heating and ________ on cooling.
11. If the temperature of a body increases from 20°C to 40°C, the rise in temperature in Kelvin scale is:
12. The coefficient of cubical expansion ($\gamma$) is related to linear expansion ($\alpha$) as:
13. Woolen clothes keep us warm in winter because:
14. What happens to the volume of water when it is heated from 0°C to 4°C?
15. The amount of heat required to raise the temperature of $1\text{ g}$ of water by $1^\circ\text{C}$ is:
16. Why are the bases of cooking pans often blackened?
17. In a liquid, the upward and downward movement of molecules due to density difference is called:
18. Ice is kept in saw-dust because:
19. If you touch a metal chair and a wooden chair on a cold morning, the metal chair feels colder because:
20. The range of a standard Clinical Thermometer is usually:
