Chemical Engineering - Mass Transfer

6.
During drying of a solid, the critical moisture content increases with
decreased drying rate
increased thickness of the solid
increased drying rate
both (b) and (c).
Answer: Option
Explanation:
No answer description is available. Let's discuss.

7.
Priming in a distillation column
results from very low gas velocity.
is desirable from point efficiency consideration.
is characterised by the presence of foam throughout the space between trays.
reduces the overall pressure drop.
Answer: Option
Explanation:
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8.
The commonly used solvent in supercritical extraction is
methyl ethyl ketone.
water.
carbon tetrachloride.
carbon dioxide.
Answer: Option
Explanation:
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9.
When the liquid over a plate is of uniform concentration, then
Murphree efficiency > point efficiency.
Murphree efficiency < point efficiency.
Murphree efficiency = point efficiency.
Murphree efficiency ≠ point efficiency.
Answer: Option
Explanation:
No answer description is available. Let's discuss.

10.
In saturated gas, the
vapour is in equilibrium with the liquid at the gas temperature.
vapour is in equilibrium with the liquid at the room temperature.
partial pressure of vapour equals the vapour pressure of the liquid at room temperature.
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.