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Mass Transfer

Mass Transfer
NSc/NPr is called the

Stantan number
Psychrometric ratio
Sherwood number
Lewis number

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Mass Transfer
Antibiotics are best handled in a

Pulsed column extractor
Sieve tray contractor
Podbielniak extractor
Rotating disc contactor

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Mass Transfer
Mass transfer co-efficient of liquid is

Affected more by temperature than that for gases
Not affected by the temperature
None of these
Affected much less by temperature than that for gases

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Mass Transfer
The temperature of water cooled in cooling tower is always __________ temperature of entering air.

Equal to the dry bulb
Equal to the wet bulb
More than the wet bulb
Less than the wet bulb

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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

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

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Mass Transfer
Sodium bicarbonate is produced during soda ash manufacture using a __________ tower.

None of these
Packed
Baffle
Plate

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