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Mass Transfer

Mass Transfer
In a binary distillation column, if the feed contains 40 mole % vapour, the q line will have a slope of

1.5
-0.6
0.6
-1.5

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Mass Transfer
Smoke is an example of

Solid dispersed in gas
Solid dispersed in liquid
Liquid dispersed in gas
Gas dispersed in liquid

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Mass Transfer
Rose oil is extracted from rose leaves using __________ distillation.

High pressure
Steam
Extractive
Low pressure

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Mass Transfer
Solvent used in extractive distillation

Is of low volatility
Does not alter the relative volatility of the original components
Forms a high boiling azeotrope
Forms a low boiling azeotrope

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Mass Transfer
Which of the following provides maximum contact surface for a liquid-vapour system?

Packed tower
Bubble-cap plate column
Seive-plate column
Wetted wall column

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Mass Transfer
Lewis number (Le) is

Sc x Pr
St x Sh
Pr x St
Sh x Pr

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