Thermodynamics

Physics
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Heat is absorbed by a body, but its temperature does not increase. Which of the following statement explains the phenomena?

A
Only K.E. of vibration increases
B
Only P.E. of inter molecular force changes
C
No increase in internal energy takes place
D
Increase in K.E. is balanced by decrease in P.E.
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The adiabatic and isothermal elasticities and  are related as : 

A
B
C
D
Medium
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An isothermal process is :

A
slow process
B
quick process
C
very quick process
D
both A & B
Medium
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On compressing a gas suddenly, its temperature 

A
increases
B
decreases
C
remains constant
D
all the above
Medium
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When we switch on the fan in a closed room, the temperature of the air molecules :

A
increases
B
decreases
C
remains unchanged
D
may increase or decrease depending on the speed of rotation of the fan
Medium
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