Mass Transfer
The mass transfer co-efficient for a solid sphere of radius 'a' dissolving in a large volume of quiescent liquid, in which D is the diffusivity of solute, is

Dependent on the Reynolds number
D/a
D/2a
Proportional to √D

ANSWER DOWNLOAD EXAMIANS APP

Mass Transfer
Which of the following psychrometric processes is followed by water vapour laden unsaturated air, when it is passed through solid or liquid adsorbent?

Dehumidification with dry bulb temperature remaining constant
None of these
Cooling and dehumidification
Heating and dehumidification at almost constant wet bulb temperature

ANSWER DOWNLOAD EXAMIANS APP