Chemical Reaction Engineering
A batch reactor is

Least expensive to operate for a given rate
Suitable for liquid phase reactions involving small production rate
Most suitable for very large production rate
Suitable for gas-phase reactions on commercial scale

ANSWER DOWNLOAD EXAMIANS APP

Chemical Reaction Engineering
Mean residence time is equal to the space time, when

All of these
There is no change in number of moles in gaseous reaction
The feed rate is measured at temperature and pressure in the reactor
The temperature, pressure and the density of reaction mixture remains constant throughout the reactor

ANSWER DOWNLOAD EXAMIANS APP