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Mass Transfer

Mass Transfer
When the feed to a distillation column is a saturated liquid, slope of the feed line is

None of these
Infinity
Zero
Unity

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Mass Transfer
Lewis number (Le) is

Sc x Pr
Sh x Pr
St x Sh
Pr x St

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Mass Transfer
In McCabe-Thiele method of theoretical plate calculation for a distillation column, the operating lines of stripping and rectifying sections coincide with the diagonal at __________ reflux.

Operating
Minimum
Maximum permissible
Total

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Mass Transfer
The relative humidity of air decreases in-spite of an increase in the absolute humidity, when the

Pressure rises
Temperature falls
Pressure falls
Temperature rises

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Mass Transfer
A binary mixture of benzene and cyclohexane is separated by

Solvent extraction
Extractive distillation
Flash vaporisation
Ordinary distillation

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

Both B and C
Reboiler
Partial condenser
Total condenser

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