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Mass Transfer

Mass Transfer
Diameter to height ratio for a rashig ring is

5
0.5
1
2

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Mass Transfer
__________ columns are used for liquid dispersion in a continuous gas phase.

Sieve plate
Packed
Pulse
Bubble cap

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Mass Transfer
Sand is dried in foundaries in a___drier.

Vacuum
Spray
Fluidisedbed
Rotary

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Mass Transfer
All moisture in a non-hygroscopic material is the __________ moisture.

Bound
Free
Equilibrium
Unbound

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Mass Transfer
Alcohol is dehydrated using __________ distillation.

Molecular
Extractive
Steam
Azeotropic

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Mass Transfer
The surface renewal frequency in Danckwerts model of mass transfer is given by (KL: mass transfer co-efficient)

KL².DA
KL²/DA
KL/DA²
√(KL².DA)

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