Heat and Thermodynamics MCQ question and answer with solution

71

It is difficult to cook rice

A) at the sea level B) at the top of a mountain C) under a mine D) same anywhere

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Answer & Solution

Answer: Option B

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72

Which of the following principles does the refrigerator work on?

A) Osmosis B) Centrifugation C) Spread D) Evaporation

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Answer: Option D

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73

On which we gets the absolute zero pressure?

A) Due to the zero of the molecular momentum of the system B) At sea level C) At a temperature of -273 Celsius D) In the center of the earth

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Answer & Solution

Answer: Option C

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74

Blowing air with open pipe is an example of

A) isothermal process B) isochoric process C) isobaic process D) adiabatic process

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Answer & Solution

Answer: Option C

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75

Statement I While putting clothes for drying up, we spread them out.
Statement II The rate of evaporation increases with an increase in surface area.

A) Both the statements are individually true and statement II is the correct expalanation of statement I B) Both the statements are individually true, but statement II is not the correct explanation of statement I C) Statement I is true, but statement II is false D) Statement I is false, but statement II is true

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Answer: Option A

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76

During the melting of solid, its temperature

A) decreases B) increases C) may increase or decrease depending on the nature of solid D) does not change

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Answer: Option D

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77

The amount of heat required to change a liquid to gaseous state without any change in temperature is known as

A) specific heat capacity B) mechanical equivalent of heat C) latent heat of vaporisation D) quenching

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Answer & Solution

Answer: Option C

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78

To convert the temperature taken on the Kelvin scale to the Celsius scale-

A) Must subtract 273 B) Must add 273 C) Must divide by 273 D) Must be multiplied by 273

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Answer & Solution

Answer: Option A

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79

Why boiling point of water decreases at high altitudes?

A) Because of high temperature B) Because of low atmospheric pressure C) Because of low temperature D) Because of high atmospheric pressure

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Answer & Solution

Answer: Option B

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80

The lowest temperature is recorded by

A) alcohol thermometer B) maximum reading thermometer C) mercurial thermometer D) minimum reading thermometer

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Answer & Solution

Answer: Option A

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Heat and Thermodynamics MCQ question and answer with solution | Physics Gk MCQs