Topic: Chapter 3: Thermal Physics (Test 1)



Topic: Chapter 3: Thermal Physics
Q.1
The value of universal gas constant
A. 3.81 mol–1 K–1
B. 8.03 mol–1 K–1
C. 1.38 mol–1 K–1
D. 8.31 mol–1 K–1
Answer : Option D
Explaination / Solution:
No Explaination.


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Q.2
If a substance is heated or cooled, the change in mass of that substance is
A. positive
B. negative
C. zero
D. none of the above
Answer : Option C
Explaination / Solution:
No Explaination.


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Q.3
If a substance is heated or cooled, the linear expansion occurs along the axis of
A. X or –X
B. Y or –Y
C. both (a) and (b)
D. (a) or (b)
Answer : Option C
Explaination / Solution:
No Explaination.


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Q.4
Temperature is the average ___________ of the molecules of a substance
A. difference in K.E and P.E
B. sum of P.E and K.E
C. difference in T.E and P.E
D. difference in K.E and T.E
Answer : Option C
Explaination / Solution:
No Explaination.


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Q.5
In the Given diagram, the possible direction of heat energy transformation is

A. A ← B,A ← C,B ← C
B. A → B,A → C,B → C
C. A → B,A ← C,B → C
D. A ← B,A → C,B ← C
Answer : Option A
Explaination / Solution:
No Explaination.


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