- (A) Interfacial surface between liquid and gas phase should be large
- (B) Time of contact between the two phases should be less
- (C) Gas velocity should be very low
- (D) Liquid entrainment should be severe
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- (A) No change in theoretical
- (B) Marginal decrease in the number of
- (C) Major decrease in the number of
- (D) None of these
- (A) Sc × Pr
- (B) Pr × St
- (C) Sh × Pr
- (D) St × Sh
- (A) Liquid stream should be distributed uniformly
- (B) Gas stream should be distributed uniformly
- (C) Both gas as well as liquid streams should be distributed uniformly
- (D) By passing should be completely avoided
- (A) Cylinder
- (B) Rotary
- (C) Spray
- (D) Fluidised bed
- (A) Small sizes
- (B) Multi-component distillation
- (C) High pressure operation
- (D) Vacuum distillation
- (A) Pulsed column
- (B) Sieve plate
- (C) Mixer-settler
- (D) Bollman
- (A) Liquid side
- (B) Gas side
- (C) Interfacial
- (D) Both liquid and gas side
- (A) Optimum number of trays
- (B) Minimum reboiler size
- (C) Maximum condenser size
- (D) Minimum number of trays
- (A) Thermal decomposition of bottoms
- (B) Increased relative volatility
- (C) Erosion of the tower
- (D) Very efficient operation
