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Mass Transfer

Mass Transfer
For continuous drying of grannular or crystalline material, the dryer used is the __________ dryer.

None of these
Rotary
Tray
Tunnel

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Mass Transfer
Mass transfer co-efficient 'K' according to penetration theory varies with mass dif-fusivity as

1/D
D
D1.5
D0.5

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Mass Transfer
Gaseous diffusivity at atmospheric pressure is of the order of __________ cm²/second.

1
1 to 5
> 10
5 to 10

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Mass Transfer
If f = moles of vapour present per mole of feed, then the slope of feed line is

- f/(1 - f)
(1 - f)/f
- 1/f
- (f - 1)/f

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Mass Transfer
For a single component absorber, the operating line is straight only when plotted in term of __________ units.

Partial pressure
Mole fraction
Mole ratio
None of these

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Mass Transfer
Which of the following adsorbent is used to decolourise yellow glycerine?

Alumina
Activated carbon
Fuller
Silica gel

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