Mass Transfer

A. Comprises of thin bed of substances of extended surface having high porosity
B. Helps in increasing the bubble size entering the settler
C. Helps in increasing the settling rate of the bubbles
D. All ‘a’, ‘b’, & ‘c’

A. Decreases with time
B. Increases with time
C. Does not change with time
D. Does not affect the moisture content of the wet solid

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

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

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

A. Fick’s law
B. Gibb’s equation
C. Freundlich equation
D. None of these

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

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

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

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