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Mass Transfer

Mass Transfer
__________ column is preferred to be used, when a high liquid hold up is required in a reactor for gas-liquid reaction.

Tray
Bubble
Spray
Packed

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Mass Transfer
At a given equilibrium pressure, with increase in temperature, the concentration of adsorbed gas on solid adsorbant

Remains unchanged
Decreases
Increases
Increases exponentially

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Mass Transfer
Paper industry employs __________ driers.

Rotary
Spray
Fluidised bed
Cylinder

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Mass Transfer
For experimental determination of mass transfer co-efficient by wetted wall tower, the mass transfer area is

Unknown
Not required
Known
Calculated

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Mass Transfer
If mass diffusivity in a mixture is equal to the thermal diffusivity, then the Lewis number is

> 1
< 1
1

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Mass Transfer
In distillation where q is defined as the moles of liquid flow in the stripping section per mole of feed introduced, for saturated liquid feed

q < 1
q = 1
q = 0
q > 1

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