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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. At upper atmosphere, an astronaut feels
2. Which of the following is the example of ideal black body?
3. Paraffin wax contracts on solidification the melting point of wax
4. A solid metal ball has a spherical cavity. If the ball is heated, the volume of the cavity will
5. While measuring the thermal conductivity of a liquid, we keep the upper part hot and the lower part cool because
6. Which is the fastest mode of heat loss?
7. 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,
8. The SI unit of mechanical equivalent of heat is
9. Temperature can be expressed as a derived quantity in terms of
10. The product of the pressure and volume of an ideal gas is
11. What is the principle by which a cooling system (Radiator) in a motor car works?
12. Rate of diffusion is
13. A gas behaves as an ideal gas more closely at
14. A gas in a metallic cylinder is suddenly compressed by a piston which is maintained at the same position with the passage of time the pressure of air
15. 71 Mode of transmission of heat in which heat carried by a moving particles is
16. An instrument used to measure humidity is
17. The heat transferred by the radiator of a refrigerator is
18. Clear nights are colder than cloudy nights because of
19. Which one of the following statements is correct? Transfer of heat energy from a heater coil to the cooking vessel takes place through the process of
20. How can boiling point of a liquid be reduced?
21. A sphere, a cube and thin circular plate, all having the same mass and made of the same material are heated to the same temperature and then allowed to cool, which of them cools fastest?
22. The best conductor of heat among the following is
23. In a pressure cooker the cooking is fast because
24. The mechanical equivalent of heat J is
25. The temperature of boiling water in a steam engine may be high because

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