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Mass Transfer

Mass Transfer
Danckwerts developed the __________ theory.

Penetration
Film
None of these
Surface renewal

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Mass Transfer
The value of L/mG ratio for economical absorption operation ranges from

0.5 to 0.8
1.25 to 2.0
2.5 to 3.5
0.8 to 1.2

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Mass Transfer
Dorr thickener is an equipment used for

Leaching
Clarification
Sedimentation
Classification

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Mass Transfer
Wetted wall tower experiment determines the

Molal diffusivity
None of these
Mass transfer co-efficient
Volumetric co-efficient

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Mass Transfer
An azeotropic mixture is a __________ mixture.

Binary
Ternary
Constant boiling point
None of these

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Mass Transfer
Penetration theory states that the mass transfer co-coefficient is equal to (where, De is diffusivity and 't' is time)

(4De/t)
(De.t)1/2
(De/t)1/2
(4De/πt)1/2

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