Mass Transfer | Test For NTS PPSC FPSC, TEST

A. Cold water leaving the tower and the wet bulb temperature of the surrounding air
B. Hot water entering the tower and the wet bulb temperature of the surrounding air
C. Hot water entering the tower and the cooled water leaving the tower
D. None of these

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Category: Mass Transfer

Component A is diffusing in a medium B. The flux NA relative to a stationary point is equal to the flux due to molecular diffusion, if____________________?

The operation involved when the soluble material is largely on the surface of an insoluble solid and is merely washed off by the solvent is called__________________?

The term “cooling range” in a cooling tower refers to the difference in the temperature of____________________?

_______________ number indicates the ratio of the rates of the heat and mass transfer incase of a cooling tower?

Corresponding to Nusselt number in heat transfer, the dimensionless group in mass transfer is the ________________ number?

The term “approach” in a cooling tower refers to the difference in the temperature of the____________________?

1 kg of a saturated aqueous solution of a highly soluble component A at 60°C is cooled to 25°C. The solubility limits of A are (0.6 kgA/kg water) at 60°C and (0.2 kgA/kg water) at 25°C. The amount in kg of the crystals formed is________________________?

Ordinary diffusion process is also called ______________ diffusion?

High pressure at the bottom of a distillation tower handling heat sensitive materials results in _____________________?

_____________ temperature is the steady state temperature attained by a small amount of liquid evaporating into a large quantity of unsaturated gas-vapor mixture ?