Chemical Engineering MCQs

A. Increases
B. Decreases
C. Remain same
D. Either a. or b., depends on the system

A. Pulse column
B. Spray column
C. Mixer settler
D. Baffle tower

A. Liquid-liquid extraction
B. Leaching
C. Absorption
D. None of these

A. Solvent of low latent heat of vaporisation should be used
B. Solvent of low freezing point should be used
C. Large quantity of solvent is required to extract the solute
D. Very small quantity of solvent is required

A. Is a static bed leaching equipment
B. Is used for extraction of oil from oilseed
C. Is a centrifugal extractor
D. Employs only counter-current extraction

A. Isothermal operation
B. Dilute solutions
C. Dilute solutions and isothermal operation
D. None of these

A. 0 to 0.5
B. 0 to 3
C. 1.25 to 2
D. 5 to 15

A. Cracks develop on the surface of the solid
B. Rate of drying decreases abruptly
C. Surface evaporation of unbound mositure occurs
D. None of these

A. Increases tray efficiency
B. Decreases tray efficiency
C. Reduces pressure drop
D. Is desirable, as it provides improved vapour-liquid contact

A. High pressure
B. Low pressure
C. Extractive
D. Steam