- (A) Plate tower is preferred, if interstage cooling is required to remove heats of reaction or solution
- (B) Plate tower is preferred over packed tower, if the operation involves liquids containing dispersed solids
- (C) The total weight of a dry plate tower is usually much more than that of a dry packed tower designed for the same duty
- (D) In operations involving large temperature changes. (
- (E) g. distillation), plate towers are preferred over packed towers as the packing may be crushed due to large temperature changes
Chemical Engineering Mcqs
- (A) Lug
- (B) Skirt
- (C) Saddle
- (D) Guy wire
- (A) Minimum cleaning lane of 6.5 mm is provided, when tubes are on a square pitch
- (B) Minimum tube sheet thickness (in which tubes are fixed) is equal to the O.D. of the tube upto 15 mm tube diameter; and for > 15 mm tube diameter, tube sheet thickness is smaller than tube diameter
- (C) O.
- (D) of the tube is 6 to 40 mm while the tube lengths used are 0.5, 2.5, 3.0, 4.0, 5.0, 6 metres
- (A) Increases
- (B) Decreases
- (C) Remain unaffected
- (D) None of these
- (A) Smaller than
- (B) Greater than
- (C) Equal to
- (D) Not related with
- (A) Foamy
- (B) Scaling
- (C) Viscous
- (D) Salting
- (A) Long tube vertical evaporator
- (B) Short tube vertical evaporator
- (C) Horizontal tube evaporator
- (D) None of these
- (A) 5 and 10
- (B) 45 and 75
- (C) 180 and 300
- (D) 300 and 500
- (A) Containing suspended solids flows at low velocity
- (B) Containing suspended solids flows at high velocity
- (C) Is highly viscous
- (D) Is of high specific gravity
- (A) Overall gas transfer units to the number of ideal trays required
- (B) Ideal trays required to the number of real trays required
- (C) Real trays required to the number of ideal trays required
- (D) None of these
