Chemical Engineering MCQs

A. Vapors and liquids are at their dew point and bubble point respectively
B. Driving force for the liquid flow is its specific weight
C. Driving force for the vapor flow is the pressure drop, as the pressure decreases gradually from
The bottom to the top of the column

A. Drum drier
B. Spray drier
C. Tunnel drier
D. Tray drier

A. Bound
B. Unbound
C. Critical
D. None of these

A. 0.4
B. 0.25
C. 0.2
D. 0.175

A. +ve
B. -ve
C. Zero
D. None of these

A. 7
B. 70
C. 0.7
D. 150

A. Free flowing
B. Dry
C. Sticky
D. Granular

A. Solid dispersed in liquid
B. Solid dispersed in gas
C. Liquid dispersed in gas
D. Gas dispersed in liquid

A. High maintenance cost
B. Non-uniform & low production rate
C. High labour cost & low heat economy
D. All ‘a’, ‘b’ & ‘c’

A. Composition of vapors and that of liquid do not vary throughout the column
B. Reboiler load and condenser load are minimum
C. The top and bottom compositions are unchanged with and without total reflux
D. The top and bottom compositions correspond to the maximum enrichment available