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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. Which of the following statements are true regarding heat?
1. Heat is a form of energy.
2. Heat can be reflected by mirror.
3. Heat is an electromagnetic radiation.
4. Heat cannot pass through vacuum. Select the correct answer from the codes given below: Codes
2. It is difficult to cook at high altitudes because
3. An electric heater, kept in vacuum, is heated continuously by passing electric current. Its temperature
4. If an ideal gas is isothermally expanded, its internal energy will
5. The change in temperature of a body is 50°C. The change on Kelvin scale is
6. Which one of the following is true for the flow of water from high level to low level (at constant temperature and pressure)?
7. An instrument used to measure humidity is
8. The temperature of a body is an indicator of
9. A gas is enclosed in a container which is then placed on a fast moving train. The temperature of the gas
10. If a bimetallic strip is heated, it will
11. At a given volume and temperature, the pressure of a gas
12. For an ideal gas the interparticle interaction is
13. The quantity of heat required to change the temperature of 1 kg of substance by 1°C is called its
14. The water from a hand-pump is warm in winter because
15. The temperature of boiling water in a steam engine may be high because
16. What is the principle by which a cooling system (Radiator) in a motor car works?
17. 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
18. Melting point of ice
19. Woollen clothes keep the body warm because
20. A solid metal ball has a spherical cavity. If the ball is heated, the volume of the cavity will
21. The critical temperature of a gas is the temperature
22. A liquid boils at a temperature at which its saturated vapour pressure becomes
23. Freezing mixture is a mixture
24. A refrigerator, with its powers on, is kept in closed room with its door open. The temperature of the room will
25. A graph is plotted taking °C along the Y-axis and of along the X-axis. It is a/an

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