Category: Process Equipment and Plant Design

A. Tube dia is 3-6 cms, while tube length in 3-6 metres
B. Steam is fed to the shell, whereas the liquor is filled inside the tube
C. Liquor level is maintained at 1/3rd to 1/2 of the height of the tube
D. None of these

A. Di, opt = 3 Q0.36 ρ0.18
B. Di, opt = 3.9 Q0.45 ρ0.23
C. Di, opt = 7.6 Q0.36 ρ0.9
D. Di, opt = 3 Q0.36 ρ1.86 μ0.08

A. 0.25 to 4
B. 0.25 to 8
C. 1 to 5
D. 1 to 12

A. Number of theoretical plates
B. Static submergence
C. Allowable vapour velocity
D. Length of straight rectangular weir on cross-flow tray

A. In a flanged and standard dished head, the crown radius is ≤ shell outside diameter
B. In a flanged and shallow dished head, the crown radius is > shell outside diameter
C. Flat head covers are most suitable for larger vessels operating at very high pressure
D. Flanged only head is a type of flat head in which gradual change in the shape at the centre results in reduced local stresses

A. More than
B. Not greater than
C. Not less than one fifth of
D. Both B. and C.

A. Ferrule
B. Socket
C. Nipple
D. Saddle

A. Equal to the impeller diameter
B. Twice the impeller diameter
C. Twice the tank diameter
D. 3/4 of the tank height

A. 25
B. 23
C. 26
D. 27

A. Distillation under vacuum is a substitute for steam distillation
B. In differential (simple) distillation, the vapour is removed as soon as it is formed without appreciable condensation
C. In flash (equilibrium) distillation, a definite fraction of liquid is vaporised in such a way that the evolved vapour & residual liquids are in equilibrium with each other
D. Flash distillation, differential distillation & steam distillation are all continuous distillation processes