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Mass Transfer

Mass Transfer
Weight of 1 m³ of humid air as compared to 1 m³ of dry air, under the same conditions, is

Unpredictable
Same
Less
More

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Mass Transfer
Very tall packed towers are divided into series of beds to

Avoid channelling
Reduce the overall pressure drop
Avoid flooding
Reduce liquid hold-up

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Mass Transfer
Rate of leaching increases with increasing

Size of the solid
Temperature
Viscosity of solvent
Pressure

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Mass Transfer
The most economical range of absorption factor is

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

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Mass Transfer
Large scale drying of sugar is done in a __________ dryer.

Spouted bed
Truck
Tray
Rotary

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

None of these
Low viscosity
Small latent heat
Large latent heat

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