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Mass Transfer

Mass Transfer
__________ column is preferred to be used, when a high liquid hold up is required in a reactor for gas-liquid reaction.

Tray
Bubble
Packed
Spray

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Mass Transfer
Humidity chart is useful for the solution of problems concerning condensation, vaporisation and air conditioning. At a given dry bulb temperature, value of humidity obtained from the humidity chart directly, is in terms of __________ humidity.

Molal
None of these
Relative
Percentage

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Mass Transfer
Fenske equation determines the

Height of the distillation column
Optimum reflux ratio
Minimum number of theoretical plates
Maximum number of ideal plates

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Mass Transfer
Leaching of coffee from coffee beans is done by

Dilute H₂SO₄ (hot)
Lime water
Hexane
Hot water

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

Total condenser
Reboiler
Both B and C
Partial condenser

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Mass Transfer
Surface renewal model of mass transfer was enunciated by

Toor and Marchello
Stefan
Fick
Danckwerts

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