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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
Tray
Rotary
Tunnel

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

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

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Mass Transfer
Moisture in a solid exerting an equilibrium vapour pressure equal to that of the pure liquid at the same temperature is called the __________ moisture.

Free
Critical
Bound
Unbound

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Mass Transfer
Removal of __________ exemplifies an adsorption unit operation.

Water from petrol
None of the listed here
Uranium from its ore
Ammonia from coke oven gas

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Mass Transfer
The Reynolds number of the liquid was increased 100 fold for a laminar falling film used for gas-liquid contacting. Assuming penetrating theory is applicable, the fold increase in the mass transfer co-efficient (Kc) for the same sytem is

100
10
1
5

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Mass Transfer
In case of absorption, both the operating and equilibrium lines will be straight for

Dilute solutions and isothermal operation
None of these
Dilute solutions
Isothermal operation

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