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Mass Transfer

Mass Transfer
When the feed to a distillation column is a saturated liquid, slope of the feed line is

Zero
None of these
Infinity
Unity

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Mass Transfer
High pressure at the bottom of a distillation tower handling heat sensitive materials results in

Increased relative volatility
Thermal decomposition of bottoms
Very efficient operation
Erosion of the tower

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Mass Transfer
Absorption accompanied with chemical reaction is exemplified by the absorption of

Benzol present in coke oven gas by wash oil
SO₂ in alkaline solution
All of these
Ammonia in water

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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

1
10
100
5

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Mass Transfer
The commonly used solvent in supercritical extraction is

Water
Carbon tetrachloride
Methyl ethyl ketone
Carbon dioxide

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Mass Transfer
Large scale usage of flash distillation is practised in

Soap manufacturing
Polymerisation industry
Ammonia synthesis plant
Petroleum refinning

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