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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

Unity
Zero
Infinity
None of these

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Mass Transfer
The interfacial area per unit volume of dispersion, in a gas-liquid contactor, for fractional hold up of gas = 0.1 and gas bubble diameter = 0.5 mm is given by (in m²/m³)

100
1000
500
50

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Mass Transfer
L/mG is the expression for

Absorption factor
Slope of operating line in absorber
Brinkman number
Slope of operating line in stripper

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Mass Transfer
In case of an unsaturated mixture of gas and vapor, the percentage saturation is __________ its relative saturation.

Higher than
Equal to
Either A or B, depends on the mixture composition
Lower than

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Mass Transfer
Psychrometry deals with the properties of gas-vapor mixture. Humidity can be determined by the measurement of the __________ of a fibre.

Thermal conductivity
None of the listed here
Strength
Electrical resistance

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

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

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