Chemical Engineering MCQs

6108 MCQs  (Page 578 of 611)

Cp of a gas at its critical temperature and pressure_______________?
A. Becomes zero
B. Becomes infinity
C. Equals 1 kcal/kmol °k
D. Equals 0.24 kcal/kmol °k
Pick out the Clausius-Clapeyron equation from the following?
A. Dp/dt = δh/tδv
B. Ln p = – (δh/rt) + constant
C. Δf = δh + t [∂(δf)/∂t]p
D. None of these
An ideal liquid refrigerant should______________________?
A. Not have a sub-atmospheric vapour pressure at the temperature in the refrigerator coils
B. Not have unduly high vapour pressure at the condenser temperature
C. Both a. and b
D. Have low specific heat
An irreversible process____________________?
A. Is the analog of linear frictionless motion in machines
B. Is an idealised visualisation of behaviour of a system
C. Yields the maximum amount of work
D. Yields an amount of work less than that of a reversible process