A. Has greater structural strength
B. Is easy to fabricate
C. Both A. and B.
D. Neither A. nor B.
A. Resistance offered to flow of liquids by caps & risers and the flow of gas
B. Low gas velocity
C. Large plate spacing
D. Large reflux ratio
A. The downcomer design and the residence time in the downcomer is almost same for sieve
plate and bubble cap columns
B. Weir length for a bubble cap plate is the same as that for the sieve plate
C. Weir height for a bubble cap plate column is the same as that for a sieve plate column
D. Weir height in case of a bubble cap plate ranges from 50 to 150 mm and is higher than the
sieve plate
A. Same as that for fluid flow
B. Less than that for fluid flow
C. More than that for fluid flow
D. D2 – D1 (D1 and D2 are I.D. of inner and outer pipes respectively)
A. Flow rates of each fluid
B. Type and size of packing
C. Concentration of each fluid
D. All A, B. & C.
A. 3-5
B. 5-11
C. 8-15
D. 12-18
A. 0.5 d
B. d
C. 1.5 d
D. 2.5 d