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Mass Transfer

Mass Transfer
At the boiling point of the liquid at the prevailing pressure, the saturated absolute humidity becomes

?
None of these
1

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Mass Transfer
Which of the following same diameter columns gives lowest pressure drop per unit height?

Sieve-plate column
Bubble-cap column
Randomly packed column
Packed column (stacked)

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Mass Transfer
Steam distillation is used for separation of high boiling

Substances from non-volatile impurities
none of the listed here
Volatile impurity from still higher boiling substances
Both of the options given here

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Mass Transfer
_______ number indicates the ratio of the rates of the heat and mass transfer incase of a cooling tower.

Lewis
Peclet
Stanton
Sherwood

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Mass Transfer
For achieving rapid drying rate in a spray dryer, the diameter of the particles in the feed should be in the range of __________ microns (1 mm = 1000 microns).

> 500
200-300
43835
22190

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Mass Transfer
Steady state temperature reached by a small amount of liquid evaporating into a large amount of unsaturated vapour-gas mixture is called the __________ temperature.

Wet-bulb
Dry-bulb
Dew point
Adiabatic saturation

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