A. heat exchange does not take place
B. no work is done by expanding steam
C. there is no change of internal energy of steam
D. all of the above
E. entropy decreases
A. two isothermals and two isentropics
B. two isentropics and two constant volumes
C. two isentropics, one constant volume and one constant pressure
D. two isentropics and two constant pres-sures
E. none of the above
A. 21
B. 23
C. 25
D. 73
E. 79
A. zeroth law of thermodynamics
B. first law of thermodynamics
C. second law of thermodynamics
D. third law of thermodynamics
E. Avogadro’s hypothesis
A. specific heat at constant pressure
B. specific heat at constant volume
C. ratio of two specific heats
D. gas constant
E. unity.
A. exactly as gas
B. as steam
C. as ordinary vapour
D. approximately as a gas
E. as average of gas and vapour
A. pressure
B. temperature
C. volume
D. internal energy
E. entropy