Category: Mass Transfer

A. Greater degree of separation with a fixed number of trays
B. Increased reboiler load
C. Increased reflux ratio
D. None of these

A. Wetted wall
B. Bubble cap
C. Perforated tray
D. Packed

A. Cylinder
B. Rotary
C. Spray
D. Fluidised bed

A. Escaping tendency of each component from the liquid phase to the vapor phase is exactly
equal to that from vapor phase to liquid phase
B. Temperature of the liquid phase is equal to that of the vapor phase
C. Total pressure throughout the liquid phase is equal to that throughout the vapor phase
D. All A., B. and C.

A. Caustic solution
B. Dilute ammoniacal liquor
C. Dilute HCl
D. Ethanolamine

A. Temperature is less
B. Total pressure is less
C. Mixing of steam with the material being vaporised is not so intimate as to result in equilibrium
condition
D. Saturated steam is used for steam distillation

A. Maintaining high critical humidity
B. Maintaining low critical humidity
C. Coating the product with inert material
D. Both A. and C.

A. Wetted wall towers
B. Packed towers
C. Venturi scrubbers
D. Agitated vessels

A. Ponchan-Savarit method is more accurate than McCabe-Thiele method to determine the
number of theoretical stages required for the separation of non-ideal binary system by
distillation
B. A sharp decrease in pressure drop is an indication of flooding in a distillation coloumn
C. Solvent used in extractive distillation should be of high volatility
D. Flash distillation is suitable for separating components which have very close boiling
temperature

A. Unbound
B. Free
C. Critical
D. Bound