Process Equipment and Plant Design
The function of manholes provided in the shell of a distillation column is to

Guard against foaming & entrainment by dumping antifoaming agent through it
Keep a check on the liquid gradient over the plate by direct visual observation
All of these
Give access to the individual trays for cleaning, maintenance and installation

ANSWER DOWNLOAD EXAMIANS APP

Process Equipment and Plant Design
Which of the following is not a valid assumption in continuous binary distillation for calculating the number of equilibrium stages by Mc-Cabe-Thiele's method?

Sensible heat changes for vapour & liquid are negligibly small
Molar latent heat of the two components are equal
Heat of mixing of normal liquid is assumed to be zero
Reflux is not a saturated liquid

ANSWER DOWNLOAD EXAMIANS APP