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Mass Transfer

Mass Transfer
When the feed to a distillation column is a saturated liquid, slope of the feed line is

Zero
Infinity
Unity
None of these

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Mass Transfer
If moisture content of solid on dry basis is X, then the same on wet basis is

(X - 1)/X
X/(X - 1)
(X + 1)/X
X/(X + 1)

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Mass Transfer
Milk is dried usually in a __________ dryer.

Rotary
Freeze
Spray
Tray

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Mass Transfer
The binary diffusivity in gases at atmospheric conditions is about

10-9 cm/sec
10-1 cm²/sec
10-4 cm²/seC₂
10-3 sec/cm

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Mass Transfer
Heat in BTU necessary to increase the temperature of 1 lb of gas and its accompanying vapour by 1°F is called the

Latent heat
Specific heat
Humid heat
Sensible heat

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Mass Transfer
Packed column distillation is limited to the column __________ metres.

Diameter < 0.6
Height < 6
Neither A nor B
Both A & B

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