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Mass Transfer

Mass Transfer
The dew point of a saturated gas phase equals the __________ temperature.

Wet bulb
Room
Gas
None of these

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Mass Transfer
Critical humidity of a solid salt means the humidity

Both A and B
Above Which it will always become dry and below which it will always stay damp
Above which it will always become damp
Below which it will always stay dry

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Mass Transfer
Only small amount of evaporation of water produces large cooling effects because of its

Large latent heat
Small latent heat
None of these
Low viscosity

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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

9.21
100
4.605
0.001

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Mass Transfer
Equilibrium moisture of a solid is equal to the total moisture minus free moisture. Which of the following substances will have maxi-mum equilibrium moisture?

Anthracite coal
Bamboo
Inorganic solids
Rag paper

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Mass Transfer
Minimum possible diameter of a packed coloumn is decided mainly by the

Liquid density
Gas viscosity
Liquid hold up
Flooding

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