Heat and Thermodynamics MCQ question and answer with solution

91

Humidity refers to

A) direction of wind B) temperature of the air C) moisture content of the air D) pressure of the air

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Answer & Solution

Answer: Option C

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92

Why water particles at zero degree centigrade have more energy than ice particles at the same temperature?

A) During the process of conversion of ice from ice to liquid water, water absorbs energy in it B) Because during the process of conversion from ice to water vapour, water absorbs energy in it C) Because during the process of conversion from ice to liquid water, water radiates energy in it D) Because during the process of conversion from ice to liquid water, ice particles absorb heat energy in it

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Answer: Option D

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93

The atmosphere exerts enormous pressure on us. But, we do not feel it because

A) Our blood exerts a pressure slightly more than that of the atmosphere B) We are used to it C) Our bones are very strong and can withstand the pressure D) The surface area of our head is very small

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Answer: Option A

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94

If we plot a graph between volume V and inverse of pressure p (i.e. $$\frac{1}{p}$$) for an ideal gas at constant temperature T, the curve so obtained is in

A) straight line B) circle C) parabola D) hyperbola

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Answer: Option A

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95

. . . . . . . . codified the first two laws of thermodynamics and deduced that the absolute zero of temperature is -273.15°C. He was honoured for this with then naming of the Kelvin temperature scale.

A) William Crookes B) William Thomson C) Luis Alvarez D) Robert Hooke

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Answer: Option B

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96

Which of the following is the conductor of electric charge?

A) Glass B) Paper C) Copper D) Water

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Answer: Option C

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97

One calorie of heat energy is equivalent to approximately . . . . . . . . joules of mechanical energy.

A) 0.24 B) 0.48 C) 2.4 D) 4.2

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Answer: Option D

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98

What temperature will Celsius and Fahrenheit scale show a similar reading?

A) 100° B) 0° C) -40° D) 40°

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Answer: Option C

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99

At what temperature are the reading of a Centigrade and Fahrenheit thermometer the same?

A) -40° B) 212° C) 40° D) 100°

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Answer: Option A

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100

What is Heat Balance?

A) The balance between the outgoing heat of the sun and the incoming heat absorbed by the earth B) Solar radiation C) The balance between the incoming heat absorbed by the earth and the outgoing heat in the form of radiation D) Terrestrial radiation

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Answer: Option C

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