Chemical Engineering MCQs

A. Liquid is stripped of high boiler
B. Liquid is enriched with high boiler
C. Vapour is stripped of low boiler
D. None of these

A. Less number of trays are required
B. Composition of the residue remains unchanged
C. More number of trays are required but the residue composition remains unchanged
D. More number of trays are required and the residue composition is more dilute in methanol

A. Momentum diffusivity to the mass diffusivity
B. Thermal diffusivity to the mass diffusivity
C. Momentum diffusivity to the thermal diffusivity
D. None of these

A. Psychrometric ratio
B. Lewis number
C. Sherwood number
D. Stanton number

A. Increase
B. Decrease
C. Remain unchanged
D. Increase/decrease; depends on the temperature

A. Zero
B. Hundred
C. Both zero and hundred
D. None of these

A. Extractive distillation
B. Crystallisation
C. Absorption
D. None of these

A. Suction pump
B. Compressed air jet
C. Steam jet ejector with a barometric condenser
D. None of these

A. Increase
B. Decrease
C. Remain same
D. Depend on saturated boiling point; may increase or decrease

A. Increases
B. Decreases
C. Remains unaffected
D. And the heat required in reboiler decreases