Mass Transfer
Which of the following plays an important role in problems of simultaneous heat and mass transfer?

Sherwood number
Prandtl number
Schmidt number
Lewis number

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Mass Transfer
Humid volume is the total volume in m³ of 1 kg of

Gas plus its accompanying vapour at 1 atm. and gas temperature
Vapour laden gas at 1 atm. and room temperature
Gas plus its accompanying vapour at 1 atm. and room temperature
Vapour laden gas at 1 atm. and gas temperature

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Mass Transfer
Inside the distillation column, the

Driving force for the vapour flow is the pressure drop
Liquids are not always at their bubble points
Pressure increases gradually from bottom to the top of the column
None of these

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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

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

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