Zeroth Law of Thermodynamics NEET Questions

Physics - Thermodynamics

Zeroth Law of Thermodynamics MCQ Questions


1.
The Zeroth Law of Thermodynamics states:
A.
Two systems each in thermal equilibrium with a third system separately are in thermal equilibrium with each other
B.
No process can convert heat entirely into work
C.
Heat always flows from a hotter body to a colder body
D.
Energy is conserved in all thermodynamic processes
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ANSWER :
A. Two systems each in thermal equilibrium with a third system separately are in thermal equilibrium with each other
2.
The Zeroth Law of Thermodynamics was formulated by:
A.
R.H. Fowler in 1931
B.
Isaac Newton in 1687
C.
James Clerk Maxwell in 1865
D.
Sadi Carnot in 1824
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ANSWER :
A. R.H. Fowler in 1931
3.
The Zeroth Law was formulated AFTER the First and Second Laws yet numbered 'zero.' This is because:
A.
It applies only at zero Kelvin
B.
It is logically prior to the other laws — it defines temperature on which the First and Second Laws depend
C.
It is the least important law
D.
Zero is a smaller number than one
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ANSWER :
B. It is logically prior to the other laws — it defines temperature on which the First and Second Laws depend
4.
Which physical concept is formally defined by the Zeroth Law of Thermodynamics?
A.
Internal energy
B.
Work done by a system
C.
Entropy
D.
Temperature
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ANSWER :
D. Temperature
5.
If systems A and B are separately in equilibrium with system C (T_A = T_C and T_B = T_C), then:
A.
T_A + T_B = 2T_C
B.
T_A and T_B are unrelated
C.
T_A = T_B — A and B are also in thermal equilibrium with each other
D.
T_A > T_B always
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ANSWER :
C. T_A = T_B — A and B are also in thermal equilibrium with each other
6.
The Zeroth Law is essentially a statement about which property of thermal equilibrium?
A.
Distributivity
B.
Commutativity
C.
Transitivity — if A equilibrium with C and B equilibrium with C, then A and B are in equilibrium
D.
Associativity
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ANSWER :
C. Transitivity — if A equilibrium with C and B equilibrium with C, then A and B are in equilibrium