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Mass Transfer

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

Tray
None of these
Tunnel
Rotary

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Mass Transfer
The value of NA/(NA + NB), for steady state equimolal counter diffusion of two gases 'A' and 'B' is

1
2
0.5
∞

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Mass Transfer
__________ is used as an 'entrainer' for the separation of acetic acid-water mixture by distillation.

Hexane
Furfural
Butyl acetate
Benzol

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Mass Transfer
Perforated plate towers are unique for solvent extraction because, they provide

Better contact of the phase
Higher contact area
Repeated coalescence & redispersion of the drop phase
None of these

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Mass Transfer
In case of gases, the binary diffusivity is proportional to (where, P = pressure)

1/P
√P
P
1/√P

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Mass Transfer
Dorr thickener is an equipment used for

Classification
Leaching
Clarification
Sedimentation

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