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CTET Prep: Science Questions - Physics - Heat
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In thermodynamics, heat is the thermal energy transferred between systems due to a temperature difference. In colloquial use, heat sometimes refers to thermal energy itself. Thermal energy is the kinetic energy of vibrating and colliding atoms in a substance.

CTET Prep: Science Questions - Physics - Heat
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25 Questions

1. A closed bottle containing water at room temperature is taken to the moon and then the lid is opened. The water will
2. A refrigerator, with its powers on, is kept in closed room with its door open. The temperature of the room will
3. While measuring the thermal conductivity of a liquid, we keep the upper part hot and the lower part cool because
4. A gas has
5. A body cools from 60°C to 50°C in 10 minutes when kept in air at 30°C. In the next 10 minutes its temperature will be
6. The best conductor of heat among the following is
7. Temperature can be expressed as a derived quantity in terms of
8. Internal energy of a perfect gas is independent of
9. The wavelength of the radiation emitted by a body depends upon
10. The temperature of a body is an indicator of
11. A solid sphere of radius R and a hollow sphere of inner radius R/2 and outer radius R, made of copper, are heated to the same temperature and are allowed to cool in the same environment. Then,
12. A metal sheet with circular hole is heated. The hole will
13. At normal temperature, due to a puncture, the compressed air inside the tube of a car wheel suddenly starts coming out. Then, the air inside the tube
14. The SI unit of mechanical equivalent of heat is
15. Water is used in hot water bags because
16. When water is heated from 0°C to 10°C its volume
17. At absolute zero temperature, the kinetic energy of the molecules
18. White clothes are cooler than black ones because they
19. When a gas expands adiabatically
20. The product of the pressure and volume of an ideal gas is
21. The amount of heat required to raise the temperature of a body through 1 K is called its
22. A solid metal ball has a spherical cavity. If the ball is heated, the volume of the cavity will
23. When an ideal gas under goes an isothermal expansion, the pressure of the gas in the enclosure falls. This is due to
24. The critical temperature of a gas is the temperature
25. A sample of gas expands from volume V1 to V2. The amount of work done by the gas is greatest when the expansion is

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