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Mass Transfer

Mass Transfer
The binary diffusivity in gases and liquids vary respectively as

√T and T3/2
T and T3/2
T3/2 and √T
T3/2 and T

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Mass Transfer
Diameter to height ratio for a rashig ring is

2
0.5
5
1

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Mass Transfer
Air at a particular humidity is heated in a furnace. The new dew point

Decreases
Depends on the extent of heating
Increases
Remain unchanged

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Mass Transfer
Swenson-Walker crystalliser is a __________ unit

Continuous
Cooling (adiabatic)-cum-evaporation
Semi-batch
Batch

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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
For the same system, if the same liquid used in an absorber is decreased, the tower height will

Decrease or increase ; depends on the type of liquid
Decrease
Remain unaffected
Increase

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