Mass Transfer
The equipment frequently used for adiabatic humidification-cooling operation with recirculating liquid is

Natural draft cooling tower
Spray chamber
None of these
Induced draft cooling tower

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Mass Transfer
In case of an absorber, the operating

Velocity is more than the loading velocity
Line always lies above the equilibrium curve
Line can be either above or below the equilibrium curve
Line always lies below the equilibrium curve

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Mass Transfer
One mole feed of a binary mixture of a given composition is flash vaporised at a fixed P and T. If Raoult's law is obeyed, then changing the feed composition would effect

Neither the product composition nor the fraction vaporised
The product composition but not the fraction vaporised
The fraction vaporised but not the product composition
The product composition as well as the fraction vaporised

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