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Mass Transfer

Mass Transfer
The absorption factor is defined as (where, L = liquid flow rate, G = gas flow rate and, m = slope of the equilibrium line)

ML/G
L/mG
G/mL
LG/m

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Mass Transfer
Operating velocity in a packed tower is usually __________ the flooding velocity.

Twice
More than
Equal to
Half

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Mass Transfer
The operating cost of a distillation column at minimum reflux ratio is

Maximum
Infinite
Minimum
Zero

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Mass Transfer
On moving the feed line (q-line) from saturated liquid feed (vertical position) to saturated vapor feed (horizontal feed), if the slope of both the operating lines are to be increased, then it will result in

Increased reflux ratio
None of these
Greater degree of separation with a fixed number of trays
Increased reboiler load

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Mass Transfer
Critical humidity of a solid salt means the humidity

Below which it will always stay dry
Above which it will always become damp
Above Which it will always become dry and below which it will always stay damp
Both A and B

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Mass Transfer
Leaching of coffee from coffee beans is done by

Hexane
Lime water
Hot water
Dilute H₂SO₄ (hot)

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