Category: Mass Transfer

A. Dialysis process is used for the production of fresh water from brine
B. Electrodialysis is used in the manufacture of NaOH
C. Electrodialysis is used for the refining/purification of petrol
D. Both B. and C.

A. Multi-component distillation
B. Binary distillation
C. Gas absorption without chemical reaction
D. Gas absorption with chemical reaction

A. Liquid stream should be distributed uniformly
B. Gas stream should be distributed uniformly
C. Both gas as well as liquid streams should be distributed uniformly
D. By passing should be completely avoided
Answer: Option C

A. 0
B. ∞
C. -ve
D. +ve

A. And humidified
B. And dehumidified with increase in wet bulb temperature
C. At the same relative humidity
D. And dehumidified with decrease in wet bulb temperature

A. 5
B. 30
C. 60
D. 100

A. Reduce the number of plates
B. Avoid thermal decomposition of a component
C. Increase the efficiency of separation
D. Increase the total pressure of distillation

A. The binary diffusivity in liquids is of the order of 10-5 cm2/sec
B. Molecular diffusion in solid is much faster than that in liquids
C. Particles movement from higher concentration to lower concentration takes place in diffusion
process
D. According to Poiseuille’s law, the permeability decreases with increase in temperature for
flow of a gas through a given capillary

A. Raising the temperature
B. Lowering the total pressure
C. Both A. and B.
D. Neither A. nor B.

A. Only heat
B. Only mass
C. Both heat and mass
D. None of these