Mass Transfer MCQs

431. Humid volume is the total volume in m³ of 1 kg of

Vapour laden gas at 1 atm. and room temperature
Gas plus its accompanying vapour at 1 atm. and room temperature
Gas plus its accompanying vapour at 1 atm. and gas temperature
Vapour laden gas at 1 atm. and gas temperature
✅ The correct answer is option C.

432. 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
✅ The correct answer is option C.

435. In steam distillation, the

Temperature is 100°C
Temperature is more than 100° C
Product must be immiscible with water
Temperature is higher than the boiling point of either component
✅ The correct answer is option C.
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