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Mass Transfer

Mass Transfer
Which of the following is not a continuous drier?

Tunnel drier
Spray drier
Tray drier
Drum drier

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Mass Transfer
Ammonia present in the coke oven gas is removed by washing with

Dilute HCl
Caustic solution
Ethanolamine
Dilute ammoniacal liquor

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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
0.017
0.107

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Mass Transfer
Leaching of coarse solid lumps is also termed as

Decoction
Percolation
Agitation and settling
Dissolution

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Mass Transfer
The efficiency of a plate column will be maximum, when the flow is ideal __________ the plate.

Both A & B
Across
Above
Neither A nor B

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Mass Transfer
The rough value of diffusion co-efficient of water vapor into air at 25°C may be about __________ cm²/sec.

0.0025
0.25
2.5
1.25

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