Chemical Engineering MCQs

A. Specific humidity
B. Partial pressure of vapour
C. Both a. and b.
D. Neither a. nor b.

A. Vapour is in equilibrium with the liquid at the gas temperature
B. Vapour is in equilibrium with the liquid at the room temperature
C. Partial pressure of vapour equals the vapour pressure of the liquid at room temperature
D. None of these

A. Increases
B. Decreases
C. Remains unchanged
D. Depends on the pressure of the system

A. 0.0
B. 0.2
C. 0.4
D. 1.0

A. Pr = sc; percentage change in heat and mass transfer flux will be the same for a given change
In The degree of turbulence
B. Pr = sc = 1; total mass, momentum and thermal diffusivity will be the same
C. Both a. and b.

A. Dry those materials which have very high unbound mositure content
B. Reduce drying temperature
C. Increase drying temperature
D. Dry materials having high bound mositure content

A. Tray
B. Rotary
C. Fluidised bed
D. None of these

A. √t
B. T
C. T1.5
D. T3

A. No reflux
B. Total reflux
C. Zero reflux ratio
D. Minimum reflux ratio

A. Adsorption
B. Binary distillation
C. Gas absorption
D. Humidification