A. 1″ dia cap with 0.5″ dia riser
B. 6″ dia cap with 4″ dia riser
C. 8″ dia cap with 1″ dia riser
D. 4″ dia cap with 8″ dia riser
Related Mcqs:
- In a distillation column, bubble caps are located on trays with a pitch of ______________ times the outside diameter of the caps?
A. 1.3 to 2
B. 1.6 to 2
C. 2.5
D. 1.5 to 3 - In the allocated cap area, bubble caps are generally arranged on equilateral triangular pitch. Number of caps fixed on a plate is with a __________________?
A. Clearance of 25-75 mm
B. Cap pitch of 1.3-2 times the cap diameter
C. Either A. or B.
D. Neither A. nor B. - For a given design of bubble cap, the number of bubble caps to be used per tray is set by the _________________?
A. Allowable gas velocity through the slots
B. Plate spacing
C. Diameter of the column
D. All A., B. and C. - The ideal size of round bubble caps to be used in industrial distillation column having a diameter of 3-6 metres is ________________ cms?
A. 5
B. 15
C. 7.5
D. 50 - In actual operation of distillation column, the vapour is not distributed uniformly among the bubble caps, primarily because of the_______________?
A. Liquid gradient on the tray
B. Lower skirt clearance
C. Lower static submergence
D. Small downcomer liquid seal - In distillation columns, bubble caps are held in place over trays by ________________?
A. Rivets
B. A hold down bar
C. Bolts
D. Both B. and C. - ____________ is the determining factor for the number of bubble caps to be used per tray?
A. Permissible slot velocity
B. Tray diameter
C. Liquid load
D. Vapor load - In a distillation column, minimum clearance to be maintained between the overflow weir and the last row of the bubble caps is ______________ cms?
A. 2.5
B. 7.5
C. 15
D. 20 - Diameter of bubble caps used in high pressure columns is ______________ as compared to that used in identical vacuum columns?
A. Less
B. More
C. Same
D. Either A. or B.; no generalisation can be made - In actual operation of a bubble cap distillation tower, the ______________ at the bottom of the tower is more than that at the top of the tower?
A. Molal flow rate of vapour
B. Vapour molecular weight
C. Pressure and temperature
D. All A., B. and C.
Mcq Added by: admin