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Mass Transfer

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

Room
Wet bulb
None of these
Gas

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Mass Transfer
With increase in the mass velocity of the gas, the rate of drying during the constant rate period __________ , if the conduction and radiation through the solid are negligible.

Remains same
Increases linearly
Decreases
Increases

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Mass Transfer
Diameter of raschig rings used in packed tower in industry is normally around __________ inches.

18
12
2
8

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Mass Transfer
For the same process conditions, the reflux ratio of an unlagged distillation column

Increases in summer
None of these
Decreases in winter
Increases in winter

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Mass Transfer
In case of constant underflow extraction operation, the __________ at all solute concentration.

Neither A nor B
Both A & B
Solids are drained to the same extent
Ratio of the insoluble to solution is constant

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

Small latent heat
Large latent heat
Low viscosity
None of these

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