Heat and Thermodynamics MCQ question and answer with solution

1

Woollen clothes protect the body from cold because

A) it is a good conductor of heat B) it is a poor conductor of heat C) external heat rays enter into the body through the woollen cloth D) it reflects heat

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Answer & Solution

Answer: Option B

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2

Zeroth Law of Thermodynamics leads to

A) the concept of temperature B) the concept of specific heat C) the concept of internal energy D) None of the above

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Answer & Solution

Answer: Option A

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3

Which of the following does not require a medium?

A) Radiation B) Convection C) Conduction D) None of the above

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Answer & Solution

Answer: Option A

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4

Absolute zero is defined as

A) the temperature at which all molecular motion ceases B) at which water boils at 298 K C) at which liquid Helium boils D) at which the volume becomes zero

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Answer & Solution

Answer: Option A

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5

A liquid remains hot or cold for a long time in thermos flask because there is no loss or gain of heat by

A) conduction B) convection and radiation C) Both A and B D) None of the above

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Answer & Solution

Answer: Option C

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6

In a refrigerator, the cooling system should always be

A) at the top B) at the bottom C) at the middle D) can be anywhere

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Answer & Solution

Answer: Option B

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7

The boiling point of water is-

A) 100° Celsius B) 50° Celsius C) 0° Celsius D) 10° Celsius

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Answer & Solution

Answer: Option A

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8

At which temperature, are fahrenheit and celsius equal?

A) -30° B) -40° C) -10° D) -20°

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Answer & Solution

Answer: Option B

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9

In the season of summer, we experience a humid heat when weather

A) Start of summer B) Middle of summer C) Scorching weather D) Humid weather

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Answer & Solution

Answer: Option D

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10

A cycle tyre bursts suddenly. This represents an

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

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Answer & Solution

Answer: Option B

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