Heat NEET Questions

Physics - Thermodynamics

Heat MCQ Questions


1.
Two identical bodies are made of a material for which the heat capacity increases with temperature. One is at 100°C, while the other is at 0°C. If brought into contact, the final temperature is:
A.
More than 50°C
B.
50°C
C.
Less than 50°C but greater than 0°C
D.
0°C
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ANSWER :
A. More than 50°C
2.
Hot water cools from 60°C to 50°C in 10 minutes and from 50°C to 42°C in the next 10 minutes. The surroundings' temperature is:
A.
10°C
B.
15°C
C.
20°C
D.
25°C
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ANSWER :
C. 20°C
3.
The amount of heat required to raise the temperature of 1 gram of water by 1°C is called:
A.
Calorie
B.
Joule
C.
Watt
D.
BTU
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ANSWER :
A. Calorie
4.
Which process involves heat transfer by conduction?
A.
Heat flow through a metal rod
B.
Warm air rising to the ceiling
C.
Sunlight warming the Earth's surface
D.
Heat transfer in a vacuum
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ANSWER :
A. Heat flow through a metal rod
5.
The specific heat capacity of a substance is defined as:
A.
Heat required to change state
B.
Heat required to raise entire substance by 1°C
C.
Heat content of the substance
D.
Heat required to raise 1 gram by 1°C
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ANSWER :
A. Heat required to change state
6.
In which mode of heat transfer does heat travel through a vacuum?
A.
Conduction
B.
Convection
C.
Radiation
D.
None of the above
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ANSWER :
C. Radiation