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Mass Transfer

Mass Transfer
The dew point of a saturated gas phase equals the __________ temperature.

Wet bulb
Room
Gas
None of these

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Mass Transfer
If the overall efficiency and Murphree plate efficiency are equal, then both the equilibrium and operating lines are

Straight
Both A & B
Neither A nor B
Parallel

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Mass Transfer
Inside the distillation columns, the

All of these
Vapors are not always at their dew points
Driving force for the liquid flow is its weight
Highest temperatures is near the feed plate

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Mass Transfer
Pick out the correct relationship. (where, Ri = internal reflux ratio Ro = external reflux ratio. )

(1 - Ro) = Ro/Ri
(1 - Ri) = Ro/Ri
(1 + Ro) = Ro/Ri
(1 + Ri) = Ro/Ri

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Mass Transfer
If the specific heats of a gas and a vapor are 0.2KJ/Kg.°K and 1.5 KJ/Kg.°K respectively, and the humidity is 0.01; the humid heat in KJ/°Kg. is

0.215
0.31
0.107
0.017

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Mass Transfer
Radioactive nuclear waste is treated in

Pulsed column extractor
Rotating-disc contactor
Bollman extractor
Mixer-settler extractor

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