Chemical Engineering MCQs

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

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. Distillation
B. Solvent extraction
C. Absorption
D. None of these

A. Form minimum boiling azeotrope
B. Have very wide boiling points
C. Have very close boiling points
D. Form constant boiling azeotrope

A. Lower than
B. Higher than
C. Equal to
D. Either a. or b., depends on the mixture composition

A. Operating
B. Total
C. Minimum
D. Maximum permissible

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

A. Thermal diffusivity/mass diffusivity
B. Thermal diffusivity/momentum diffusivity
C. Momentum diffusivity/mass diffusivity
D. Mass diffusivity/thermal diffusivity

A. Evaporation
B. Drying
C. Crystallisation
D. Both b. and c.

A. 0
B. 1
C. 2
D. 3