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Mass Transfer

Mass Transfer
Pore size of the molecular seive 5A is __________ mm.

5
50
0.05
0.5

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Mass Transfer
In extractive distillation, solvent is

Present in overhead stream
Of high volatility
Added to alter the relative volatility of the mixture
Of high viscosity to give high tray efficiency

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Mass Transfer
The most economical range of absorption factor is

2.5 to 3
5 to 10
1.25 to 2
2 to 2.5

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Mass Transfer
L/mG is the expression for

Slope of operating line in absorber
Absorption factor
Brinkman number
Slope of operating line in stripper

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Mass Transfer
Heat in BTU necessary to increase the temperature of 1 lb of gas and its accompanying vapour by 1°F is called the

Humid heat
Specific heat
Sensible heat
Latent heat

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Mass Transfer
An alkaline solution is used to reduce the concentration of carbon dioxide in a stream from 10% to 0.1% by absorption with irreversible chemical reaction. The overall number of transfer units based on gas phase is

4.605
100
0.001
9.21

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