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Mass Transfer

Mass Transfer
Reverse osmosis is also called

Ultrafiltration
Dialysis
Diffusion
Electrodilysis

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

None of these
Infinite
Optimum
Minimum

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Mass Transfer
Molecular seives are regenerated by heating to __________ °C.

200-330
> 1000
< 150
> 500

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Mass Transfer
With decrease in the throughput (compared with the design capacity) for a bubble cap distillation column, its efficiency

Decreases
Increases
May increase or decrease ; depends on individual design
Remains same

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

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Mass Transfer
A mixture of 10% C₆H₆ vapour in air at 25°C and 750 mm Hg has a dew point of 20°C. Its dew point at 30°C and 700 mm Hg will be around __________ °C.

21.7
27.3
20
18.7

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