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Mass Transfer

Mass Transfer
Which of the following adsorbent is used to decolourise yellow glycerine?

Silica gel
Alumina
Activated carbon
Fuller

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Mass Transfer
The ratio of Murphree plate efficiency to point efficiency is always > 1 in a __________ flow model.

Both plug & perfectly mixed
Perfectly mixed
None of the listed here
Plug

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Mass Transfer
In a single stage extraction process, 10 kg of pure solvent S (containing no solute A) is mixed with 30 kg of feed F containing A at a mass fraction xf = 0.2. The mixture splits into an extract phase E and a raf-finate phase R containing A at xB = 0.5 and xR = 0.05 respectively. The total mass of the extract phase is (in Kg)

10
6.89
8.25
8.89

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Mass Transfer
______ extractor uses centrifugal force for separating the two phases.

Treybal
None of the listed here
Schiebel
Podbielniak

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Mass Transfer
Design calculation for multiple component distillation is done by

Enthalpy concentration method
Mccabe-Thiele method
Tray to tray calculations
Ponchon-Savarit method

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Mass Transfer
On moving the feed line (q-line) from saturated liquid feed (vertical position) to saturated vapor feed (horizontal feed), if the slope of both the operating lines are to be increased, then it will result in

None of these
Increased reflux ratio
Increased reboiler load
Greater degree of separation with a fixed number of trays

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