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Mass Transfer

Mass Transfer
What is the reflux ratio at total reflux?

Infinity
Unity
Zero
Data insufficient

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Mass Transfer
Large scale usage of flash distillation is practised in

Petroleum refinning
Ammonia synthesis plant
Polymerisation industry
Soap manufacturing

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Mass Transfer
For continuous drying of grannular or crystalline material, the dryer used is the __________ dryer.

Tunnel
Rotary
Tray
None of these

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Mass Transfer
During drying operation, it is easier to remove the __________ moisture.

Bound
Unbound
Equilibrium
Critical

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Mass Transfer
Milk is dried usually in a __________ dryer.

Tray
Rotary
Spray
Freeze

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Mass Transfer
Penetration theory states that the mass transfer co-coefficient is equal to (where, De is diffusivity and 't' is time)

(De/t)1/2
(4De/t)
(4De/πt)1/2
(De.t)1/2

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