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Mass Transfer

Mass Transfer
Milk is dried usually in a __________ dryer.

Rotary
Freeze
Tray
Spray

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Mass Transfer
The amount of steam required per unit quantity of distillate in case of steam distillation will be reduced by

Both A & B
Neither A nor B
Raising the temperature
Lowering the total pressure

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Mass Transfer
Which of the following solutions will follow Raoult's law most closely?

35% solution of NH₃ in water
A solution of benzene, toluene and oxylene
35% solution of camphor in water
A solution of polar organic compounds (not of homologs of a series)

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Mass Transfer
Which of the following equipments is not used for gas dispersion?

Spray towers
Perforated sieve tray towers
Agitated vessels
Bubble cap tray towers

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Mass Transfer
In a forced draft cooling tower, water is cooled from 95 to 80°F by exposure to air with a wet bulb temperature of 70°F. In this case, the

Range is 15°F
Both A & B
Neither A nor B
Approach is 10°F

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Mass Transfer
Steady state equimolal counter diffusion is encountered in

Separation of a binary mixture by distillation
All of these
All liquid-liquid diffusion systems
Absorption of NH₃ from air by water

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