Mass Transfer
For contacting a highly soluble gas with a liquid

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

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Mass Transfer
Relative humidity is the ratio of the

Partial pressure of the vapour to the vapour pressure of the liquid at gas temperature
None of these
Actual humidity to saturation humidity
Partial pressure of the vapour to the vapour pressure of the liquid at room temperature

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