Mass Transfer
Which of the following remains constant during sensible cooling process ?

Specific humidity & Partial pressure of vapour
Specific humidity
None of the listed here
Partial pressure of vapour

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Mass Transfer
Plate towers are preferred to packed towers, when large temperature changes are involved, because of the reason that the

Packing may be crushed due to thermal expansion/contraction of the components of the equipments
Viscosity variation of the fluids may cause channeling/flooding
None of these
Pressure drop in the equipment will be very high

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