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Mass Transfer

Mass Transfer
Mass transfer co-efficient (K) and diffusivity (D) are related according to film theory as

K ∝ D1.5
K ∝ D
K ∝ √D
K ∝ D2

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

Hydrochloric acid
Nitric acid
Sulphuric acid
Alkalis

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Mass Transfer
Condensation of a vapour-gas mixture just begins, when (where, p = partial pressure of the vapour P = vapour pressure of the liquid )

P >>P
P
P < P
P = P

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Mass Transfer
Corresponding to Nusselt number in heat transfer, the dimensionless group in mass transfer is the __________ number.

Stanton
Schmidt
Peclet
Sherwood

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Mass Transfer
With increase in temperature, the leaching rate increases because of the

Decreased viscosity of liquid
Both Decreased viscosity of liquid & Increased diffusivity
Increased diffusivity
None of the listed here

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Mass Transfer
Liquid diffusivity is of the order of __________ cm² /second.

10-5 to 10-6
0.01
0.1
> 1

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MORE MCQ ON Mass Transfer

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