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Mass Transfer

Mass Transfer
Wet bulb and dry bulb temperatures becomes identical at __________ percent saturation curve.

100
None of these
50
78

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Mass Transfer
Batch tray dryers suffers from the disadvantage of

High labour cost & low heat economy
High maintenance cost
Non-uniform & low production rate
All of the listed here

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Mass Transfer
Which of the following is not fixed by the process requirements, in the design of absorbers?

Flow rate of the entering gas
Terminal concentrations of gas stream
None of these
Composition of the entering liquid

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Mass Transfer
To increase the absorption factor, (where, G = gas flow rate, S = solvent flow rate)

Decrease both 'G' and 'S'
Increase both 'G' and 'S'
Increase 'S' and decrease 'G'
Increase 'G' and decrease 'S'

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Mass Transfer
With increase in temperature, the leaching rate increases due to

Both A & B
Decreased liquid viscosity
Increased diffusivity
Neither A nor B

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Mass Transfer
For contacting a highly soluble gas with a liquid

Both of the options given here
Spray the liquid on gas stream
None of the listed here
Bubble the gas through liquid

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