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Mass Transfer

Mass Transfer
Large scale drying of wheat is done in a __________ dryer.

Spouted bed
Fluidised bed
Tray
Vacuum rotary

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Mass Transfer
The-relative volatility for separation of a non-ideal binary mixture by distillation should be

1
< 1
> 1

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Mass Transfer
Reboiler is considered as one theoretical plate, because

Vapour is recycled to the column
Reboiler itself contains one plate
None of these
Of the assumption that vapour and liquid leaving the reboiler are in equilibrium

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Mass Transfer
In case of an ideal solution, the total vapor pressure varies __________ with the composition expressed as mole fraction,

Inversely
None of these
Linearly
Exponentially

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Mass Transfer
Critical humidity of a solid salt means the humidity

Both A and B
Above Which it will always become dry and below which it will always stay damp
Below which it will always stay dry
Above which it will always become damp

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Mass Transfer
Raschig ring made of procelain cannot be used for treating concentrated

Hydrochloric acid
Alkalis
Nitric acid
Sulphuric acid

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