- (A) 0.1 to 0.25
- (B) 0.3 to 0.5
- (C) 0.5 to 0.6
- (D) 0.65 to 0.80
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- (A) A finite stage contactor
- (B) Used only for distillation, not for absorption
- (C) A differential stage contactor
- (D) A continuous contactor
- (A) Called tube pitch
- (B) Called tube clearance
- (C) More in case of triangular pitch as compared to square pitch of tube layout
- (D) None of these
- (A) Head diameter
- (B) Shank diameter
- (C) Overall length
- (D) None of these
- (A) Increase by 1.8
- (B) Decrease by 22
- (C) Increase by 21.6
- (D) None of these
- (A) 1 to 1.5
- (B) 2.5 to 3.5
- (C) 4 to 5
- (D) 6 to 8
- (A) Sorel-Lewis method
- (B) McCabe-Thiele’s method
- (C) Ponchon-Savarit method
- (D) None of these
- (A) Is economical in operation
- (B) Employs high velocity, high heat transfer rate and less heating surface requirement
- (C) Employs a centrifugal pump placed between external downtake from vapor drum and inlet to tube bundle
- (D) Both
- (A) Drain the liquid from the tray when the unit is not in operation
- (B) Allow for thermal expansion and facilitate installation
- (C) Avoid back-trapping
- (D) None of these
- (A) Temperature
- (B) Pressure/pressure fluctuation
- (C) Turbulence
- (D) Noise
