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NDA GK Previous Papers Chapterwise MCQs - Thermodynamics
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NDA GK Previous Papers Chapterwise MCQs - Thermodynamics
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25 Questions

1. A thermodynamic process where no heat is exchanged with the surroundings is
2. Which one of the following statements is correct?
3. The amount of heat required to change a liquid to gaseous state without any change in temperature is known as
4. Which one among the following denotes the smallest temperature?
5.
The figure given above shows the temperature (T) – time (t) plot when we start heating a piece of naphthalene. The temperature (T*) at the plateau of the curve signifies
6. The phenomenon of 'trade winds' takes place due to
7. The surface temperature of the Sun is nearly
8. Metal pipes used to carry water sometimes burst in the winter. This is because
9. A man with a dark skin, in comparison with a man with a white skin, will experience
10. Which of the following statements about latent heat for a given substance is/are correct?
1. It is fixed at a given temperature.
2. It depends upon the temperature and volume.
3. it is independent of temperature and volume.
4. It depends on the temperature but independent of volume. Select the correct answer using the code given below:
11. When water is heated from 0°C to 20°C, how does its volume change ?
12. Pressure of a gas increases due to increase of its temperature because at higher temperature
13. The sun is constantly radiating energy and yet its surface temperature is nearly constant at 6000°C. The constancy of solar temperature is due to
14. A Kelvin thermometer and a Fahrenheit thermometer both give the same reading for a certain sample. What would be the corresponding reading in a Celsius thermometer?
15. Fahrenheit and Celsius are the two scales used for measuring temperature. If the numerical value of a temperature recorded in both the scales is found to be same, what is the temperature?
16. Which of the following statements about specific heat of a body is/are correct?
1. It depends upon mass and shape of the body
2. It is independent of mass and shape of the body
3. It depends only upon the temperature of the body Select the correct answer using the code given below:
17. Which one among the following statements about thermal conductivity is correct ?
18. Thermal conductivity of aluminium, copper and stainless steel increases in the order
19. A hot object loses heat to its surroundings in the form of heat radiation. The rate of loss of heat depends on the
20. Heat given to a body which raises its temperature by 1°C is known as
21. Thermometer A and B have ice points marked at 15° and 25° and steam points at 75° and 125° respectively. When thermometer A measures the temperature of a bath as 60°, the reading of B for the same bath is
22. Which one of the following statements is not correct?
23. When a solid object is immersed in water, there is a loss in its weight. This loss is
24. A bucket full of water is kept in a room and it cools from 75°C to 70°C in time T1 minutes, from 70°C to 65°C in timeT2 minutes, and from 65°C to 60°C in time T3 minutes, then
25. The statement that ‘heat cannot flow by itself from a body at a lower temperature to a body at a higher temperature’, is known as

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