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Mass Transfer

Mass Transfer
In liquid-liquid extraction, the number of phases at plait point is

2
1
4
3

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Mass Transfer
Antibiotics are best handled in a

Pulsed column extractor
Sieve tray contractor
Podbielniak extractor
Rotating disc contactor

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Mass Transfer
_______ number indicates the ratio of the rates of the heat and mass transfer incase of a cooling tower.

Lewis
Peclet
Stanton
Sherwood

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Mass Transfer
Unit operation involved in the prilling of urea is

Drying
Both B and C
Crystallisation
Evaporation

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Mass Transfer
Flooding in a column results due to

High pressure drop
Low velocity of the liquid
High temperature
Low pressure drop

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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)

8.89
10
6.89
8.25

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