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Mass Transfer

Mass Transfer
Diameter of raschig rings used in packed tower in industry is normally around __________ inches.

8
18
2
12

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Mass Transfer
In a binary distillation column, if the feed contains 40 mole % vapour, the q line will have a slope of

0.6
-1.5
-0.6
1.5

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Mass Transfer
Percentage saturation is __________ the relative saturation.

Always smaller than
Not related to
None of these
Always greater than

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Mass Transfer
Molecular seives are porous

Silica
Synthetic zeolites crystals/metal alumino-silicates
None of these
Alumina

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Mass Transfer
According to Poiseuille's law, the permeability for gas flow through a capillary is proportional to (where, μ = gas viscosity)

μ
√μ
1/μ
μ²

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Mass Transfer
Which of the following binary systems is an example of a maximum boiling azeotrope?

Water-hydrochloric acid
Water-ethyl alcohol
None of the listed here
Acetone-carbon disulphide

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