A. A finite stage contactor
B. Used only for distillation, not for absorption
C. A differential stage contactor
D. A continuous contactor
A. Results in higher shell side pressure drop
B. Can accomodate less number of tubes for a given shell diameter
C. Facilitates easier shell side cleaning; hence is more suitable for handling high dirt factor shell
side fluid
D. Creates relatively lower turbulence on the shell side resulting in lower shell side heat transfer
co-efficient
A. 0
B. ∞
C. > 1
D. < 1
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 B. & C.
A. ∞
B. 1
C. 20.8
D. 2
A. 1 to3
B. 4 to 8
C. 3 to 12.5
D. 12.5 to 18.5
A. Zig-zag
B. Chain
C. Diamond
D. None of these