Exercise: Thermodynamics

Questions for: Thermodynamics

The ratio of molar specific heats for monoatomic gas is
A:
1
B:
1.4
C:
1.67
D:
1.87
Answer: C
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Stirling cycle consists of
A:
two constant volume and two isentropic processes
B:
two constant volume and two isothermal processes
C:
two constant pressure and two isothermal processes
D:
one constant volume, one constant pressure and two isentropic processes
Answer: B
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The root mean square velocity of the gas molecules is given by (where k = Boltzmann's constant, T = Absolute temperature, and m = Mass of one molecule of a gas)
A:
B:
C:
D:
Answer: C
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According to First law of thermodynamics,
A:
total internal energy of a system during a process remains constant
B:
total energy of a system remains constant
C:
workdone by a system is equal to the heat transferred by the system
D:
internal energy, enthalpy and entropy during a process remains constant
Answer: B
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The hard coke is obtained when carbonisation of coal is carried out at
A:
300° to 500°C
B:
500° to700°C
C:
700° to 900°C
D:
900° to 1100°C
Answer: D
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