The entropy change in a reversible isothermal process, when an ideal gas expands to four times its initial volume is_________________?

A. Only ΔE = 0
B. Only ΔH =0
C. ΔE = ΔH = 0
D. dQ = dE

A. Cold reservoir approaches zero
B. Hot reservoir approaches infinity
C. Either A. or B
D. Neither A. nor B

A. +ve
B. -ve
C. 0
D. ∞

A. Volume of the liquid phase is negligible compared to that of vapour phase
B. Vapour phase behaves as an ideal gas
C. Heat of vaporisation is independent of temperature
D. All A , B. & C.

A. Prediction of the extent of a chemical reaction
B. Calculating absolute entropies of substances at different temperature
C. Evaluating entropy changes of chemical reaction
D. Both B. and C.

A. T
B. T and P
C. T, P and Z
D. T and Z