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Mass Transfer

Mass Transfer
Langmuir equation is associated with

Steam distillation
Leaching
Multicomponent absorption
Adsorption

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Mass Transfer
When the mixture to be distilled has a very high boiling point and the product material is heat sensitive, the separation technique to be used is __________ distillation.

Steam
Azerotropic
Continuous
None of these

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Mass Transfer
Chemisorption (chemical adsorption) is

An irreversible phenomenon
A reversible phenomenon
Same as "Van der Waals" adsorption
Characterised by adsorption of heat

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Mass Transfer
Large scale usage of flash distillation is practised in

Petroleum refinning
Soap manufacturing
Polymerisation industry
Ammonia synthesis plant

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Mass Transfer
A mixture of 10% C₆H₆ vapour in air at 25°C and 750 mm Hg has a dew point of 20°C. Its dew point at 30°C and 700 mm Hg will be around __________ °C.

21.7
27.3
18.7
20

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Mass Transfer
In continuous distillation, the internal reflux ratio (Ri) and the external reflux ratio (Re) are related as

Ri = Re/(1 + Re)
Ri = Re/(1 - Re)
Ri = (1 - Re)/Re
Ri = Re

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