Process Equipment and Plant Design
Liquid gradient over a tray can be minimised by

All of these
Using split flow, radial flow or cascade flow for column diameter large than 4 ft
Decreasing the number of rows of caps through which the liquid flows or by decreasing the velocity of liquid flow past the caps or by reducing the distance along the tray through which the liquid must
Providing a higher skirt clearance or a higher weir

ANSWER DOWNLOAD EXAMIANS APP

Process Equipment and Plant Design
In a shell and tube heat exchanger, the clearance of the tube is generally

More in case of triangular pitch as compared to the square pitch tube layout
More than the tube diameter
Equal to the tube diameter
Not less than one-fourth of the tube diameter or 3/16"

ANSWER DOWNLOAD EXAMIANS APP

Process Equipment and Plant Design
Smoker's equation for the calculation of number of equilibrium stages in a continuous binary distillation column is used, when the

Number of equilibrium stages required is likely to be very small
Relative volatility is close to one (e.g., separation of close boiling isomers)
Feed is not at its bubble point
Number of equilibrium stages in only stripping section is to be calculated

ANSWER DOWNLOAD EXAMIANS APP
MORE MCQ ON Process Equipment and Plant Design