Questions 51–53 of 53 Thermodynamics and Heat MCQs — start at page 1 for an overview.
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Thermodynamics and Heat
Triple point of water is _________?
Correct answer: C
The triple point of water is the unique temperature and pressure at which water can coexist in solid, liquid, and gas phases. This temperature is precisely 273.16 K, making option C correct.
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Thermodynamics and Heat
For a fixed mass of gas at constant temperature, if we decrease the volume, the pressure will ________?
Correct answer: B
According to Boyle's Law, for a fixed amount of gas at constant temperature, pressure and volume are inversely proportional. Therefore, decreasing the volume results in an increase in pressure.
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Thermodynamics and Heat
Water : Convection :: Space : _______?
Correct answer: D
Convection is a mode of heat transfer that requires a medium like water, whereas space is a vacuum where heat transfer occurs primarily through radiation. Thus, the analogy matches 'Water : Convection' with 'Space : Radiation'.
