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Mass Transfer

Mass Transfer
The slope of the operating line for a single component co-current absorber when plotted in terms of mole ratio units is

∞
+ve
-ve

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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

0.001
4.605
100
9.21

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Mass Transfer
The cooling effect in a cooling tower can be speeded up by

All of the listed here
Increasing the air velocity and area of exposed wet surface
Reducing the humidity of the air
Reducing the barometric pressure

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Mass Transfer
Corresponding to Nusselt number in heat transfer, the dimensionless group in mass transfer is the __________ number.

Peclet
Sherwood
Schmidt
Stanton

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Mass Transfer
In rectifying section of a continuous distillation column, the

None of these
Vapour is enriched with high boilers
Liquid is stripped of high boilers
Vapour is enriched with low boilers

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Mass Transfer
Molecular distillation is

Very low pressure distillation
High temperature distillation
Both B and C
For heat-sensitive materials

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