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Mass Transfer

Mass Transfer
Free flowing granular materials can be best dried in a __________ drier.

Rotary
Drun
Cylinder
Freeze

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Mass Transfer
Occurrence of 'case hardening' during drying of a high moisture solid cake __________ the drying rate.

Does not affect
Exponentially increases
Increases
Decreases

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Mass Transfer
Which of the following unit operations makes use of Thiele-Geddes equation?

Liquid-liquid extraction
Multicomponent distillation
Multicomponent absorption with chemical reaction
Solid-liquid extraction

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Mass Transfer
According to Poiseuille's law, the permeability for gas flow through a capillary is proportional to (where, μ = gas viscosity)

√μ
μ
1/μ
μ²

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Mass Transfer
The value of L/mG ratio for economical absorption operation ranges from

2.5 to 3.5
1.25 to 2.0
0.8 to 1.2
0.5 to 0.8

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Mass Transfer
When the feed to a distillation column is a saturated liquid, slope of the feed line is

Infinity
Zero
Unity
None of these

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