First and Second Laws of Thermodynamics NEET Questions

Physics - Thermodynamics

First and Second Laws of Thermodynamics MCQ Questions


7.
Which process is not allowed by the Second Law of Thermodynamics?
A.
Heat engine with 100% efficiency
B.
A perpetual motion machine
C.
Isothermal expansion
D.
Adiabatic process
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ANSWER :
B. A perpetual motion machine
8.
The first law of thermodynamics is a statement of:

NEET - 2016

A.
Conservation of momentum
B.
Conservation of energy
C.
Conservation of mass
D.
Conservation of charge
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ANSWER :
B. Conservation of energy
9.
What is the mathematical expression of the First Law of Thermodynamics?
A.
ΔQ = ΔU - ΔW
B.
ΔQ = ΔU + ΔW
C.
ΔW = ΔQ - ΔU
D.
ΔU = ΔQ - ΔW
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ANSWER :
B. ΔQ = ΔU + ΔW
10.
The Second Law of Thermodynamics introduces the concept of:
A.
Entropy
B.
Internal energy
C.
Temperature
D.
Heat capacity
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ANSWER :
A. Entropy
11.
Which of the following is an irreversible process according to the Second Law?
A.
Melting of ice
B.
Boiling of water
C.
A gas expanding into a vacuum
D.
Evaporation of water
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ANSWER :
C. A gas expanding into a vacuum
12.
The First Law of Thermodynamics is also known as:
A.
The law of conservation of energy
B.
The principle of work-energy transfer
C.
The principle of entropy conservation
D.
The principle of volume conservation
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ANSWER :
A. The law of conservation of energy