Exercise: Thermodynamics

Questions for: Thermodynamics

When the gas is cooled at constant pressure,
A:
its temperature increases but volume decreases
B:
its volume increases but temperature decreases
C:
both temperature and volume increases
D:
both temperature and volume decreases
Answer: D
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The oxygen atom is __________ times heavier than the hydrogen atom.
A:
2
B:
4
C:
8
D:
16
Answer: D
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Which of the following gas has the highest calorific value?
A:
Coal gas
B:
Producer gas
C:
Mond gas
D:
Blast furnace gas
Answer: A
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The heat absorbed or rejected by the working substance is given by (where ds = Increase or decrease of entropy, T = Absolute temperature, and dQ = Heat absorbed or rejected)
A:
δQ = T.ds
B:
δQ = T/ds
C:
dQ = ds/T
D:
none of these
Answer: A
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The value of cp/cv for air is
A:
1
B:
1.4
C:
1.8
D:
23
Answer: B
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