Category: Mass Transfer

A. 2
B. 0.5
C. 50
D. 150

A. Zero
B. Unity
C. Infinity
D. None of these

A. Reflux ratio
B. Plate efficiency to be achieved
C. Thermal condition of the feed
D. Relative volatility

A. Diffusion co-efficient
B. Mass transfer co-efficient
C. NTU
D. None of these

A. Beginning of falling
B. Beginning of constant
C. End of falling
D. None of these

A. High maintenance cost
B. Non-uniform & low production rate
C. High labour cost & low heat economy
D. All ‘a’, ‘b’ & ‘c’

A. Range is 15°F
B. Approach is 10°F
C. Both A. & B.
D. Neither A. nor B.

A. Of slope = 1
B. Of slope = 0.1
C. Tangential to the equilibrium curve
D. None of these

A. Perfectly dry
B. Highly humid
C. High temperature
D. None of these

A. Constant pressure distillation cannot separate an Azeotropic mixture
B. Relative volatility of a binary mixture changes appreciably with the minor change in
temperature
C. The relative volatility of a binary mixture at Azeotropic composition is unity
D. Flash distillation is practised on wide spread scale in petroleum refinery