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MASS TRANSFER

Mass Transfer
In a forced draft cooling tower, water is cooled from 95 to 80°F by exposure to air with a wet bulb temperature of 70°F. In this case, the

Neither A nor B
Range is 15°F
Both A & B
Approach is 10°F

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Mass Transfer
During sensible cooling process

Relative humidity increases
Wet bulb temperature decreases
Both B and C
Relative humidity decreases

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Mass Transfer
Which of these columns incurs the lowest pressure drop?

Packed column (with dumped packing)
Bubble plate column
Packed column (with stacked packing)
Pulse column

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Mass Transfer
Raschig ring made of procelain cannot be used for treating concentrated

Hydrochloric acid
Nitric acid
Alkalis
Sulphuric acid

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Mass Transfer
Alcohol is dehydrated using __________ distillation.

Steam
Azeotropic
Extractive
Molecular

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