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Mass Transfer

Mass Transfer
Wet bulb and dry bulb temperatures becomes identical at __________ percent saturation curve.

78
100
None of these
50

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Mass Transfer
In paper industry, paper is dried in a __________ dryer.

Conveyor
Festoon
Tunnel
Heated cylinder

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Mass Transfer
Rate of leaching increases with increasing

Pressure
Size of the solid
Viscosity of solvent
Temperature

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Mass Transfer
During constant rate period, the rate of drying decreases with the

Decrease in air temperature
Increase in air humidity
Neither A nor B
Both A & B

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Mass Transfer
Equilibrium-moisture curves of different solids

Depend on the humidity of the gas
Are different
Are same
None of these

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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?

Inorganic solids
Anthracite coal
Rag paper
Bamboo

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