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Mass Transfer

Mass Transfer
According to the film theory of mass transfer, the mass transfer co-efficient is proportional to (where, D = molecular diffusivity)

D
1/D
D2
D0.5

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Mass Transfer
Hydrogenation of oil is carried out in a/an __________ in Vanaspati manufacturing plant.

Agitated vessel
Bubble cap column
Sieve tray column
Packed tower

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Mass Transfer
Which of the following is considered equivalent to one theoretical stage in Mc-Cabe Thiele's method?

Reboiler
Both B and C
Partial condenser
Total condenser

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Mass Transfer
The most efficient cooling tower out of the following is

Natural draft
Induced draft
Atmospheric
Forced draft

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Mass Transfer
Deairation (removal of O₂) of water is done by

Adsorption
Absorption
Ion-exchange
Rectification

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Mass Transfer
The ratio of Murphree plate efficiency to point efficiency is 1 in a __________ flow model.

Perfectly mixed
None of the listed here
Plug
Both plug & perfectly mixed

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