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Mass Transfer

Mass Transfer
The slope of the operating line for a single component co-current absorber when plotted in terms of mole ratio units is

∞
-ve
+ve

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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.

20
21.7
27.3
18.7

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Mass Transfer
In azeotropic mixture, the equilibrium vapour composition is

More than liquid composition
Same as liquid composition
Less than liquid composition
None of the listed here

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Mass Transfer
Smoke is an example of

Solid dispersed in liquid
Solid dispersed in gas
Liquid dispersed in gas
Gas dispersed in liquid

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Mass Transfer
McCabe-Thiele method of binary distillation does not assume that the

None of these
Heat of mixing is negligible
Molar latent heats of all components are equal
Sensible heat changes are negligible compared with latent heat changes

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Mass Transfer
Stacked packing compared to dumped packing

Provides poorer contact between the fluids
Gives higher pressure drop
Both A & B
Gives lower pressure drop

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