Test: Mass Transfer - 4 - Chemical Engineering MCQ

Free flowing granular materials can be best dried in a __________ drier.

In case of an ideal solution, the total vapor pressure varies __________ with the composition expressed as mole fraction,

Corresponding to Nusselt number in heat transfer, the dimensionless group in mass transfer is the __________ number.

If the specific heats of a gas and a vapor are 0.2KJ/Kg.^oK and 1.5 KJ/Kg.^oK respectively, and the humidity is 0.01; the humid heat in KJ/^oKg. is

Liquid diffusivity is of the order of __________ cm² /second.

Estimate the feed rate, if the composition of the more volatile component in the feed is 50% and the residue is 10% and the equilibrium relation is given by y*= 1.975x. Also the rate of residue is 60 mol/hr.

At the same gas flow rate, the pressure drop in a packed tower being irrigated with liquid __________ that in dry packed tower.

Corresponding to Nusselt number in heat transfer, the dimensionless group in mass transfer is the __________ number.

If the specific heats of a gas and a vapor are 0.2KJ/Kg.^oK and 1.5 KJ/Kg.^oK respectively, and the humidity is 0.01; the humid heat in KJ/^oKg. is

Liquid diffusivity is of the order of __________ cm² /second.

The solvent used in liquid extraction should not have high latent heat of vaporisation, because

At the same gas flow rate, the pressure drop in a packed tower being irrigated with liquid __________ that in dry packed tower.

Which of the following binary systems is an example of a maximum boiling azeotrope ?

(N_Re . N_Sc) is termed in mass transfer operation as the __________ number.

The binary diffusivity in gases and liquids vary respectively as

Pick out the correct statement.

Pick out the correct statement.

Pick out the correct statement.

Very tall packed towers are divided into series of beds to

Moisture contained by a substance in excess of the equilibrium moisture is called the __________ moisture.

With increase in temperature, the solubility of gases in liquids, at fixed pressure

In most of the vacuum crystalliser, vacuum is generally produced by means of a