Vidyalelo
Chemical Engineering · all questions

Mass Transfer
practice.

Practice every MCQ with options. Use Show answers when you want the correct option and solution.

656

Questions

28/33

Page

Pick an option on a question to see the right answer and solution.

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

Select an option to see the answer and solution.

In a counter-current extractor, as the axial mixing increases, the extraction efficiency

Select an option to see the answer and solution.

Mass transfer co-efficient of liquid is

Select an option to see the answer and solution.

The rate of mass transfer is not dependent upon the

Select an option to see the answer and solution.

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

Select an option to see the answer and solution.

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

Select an option to see the answer and solution.

The expression,   is for

Select an option to see the answer and solution.

The absorption factor is defined as (where, L = liquid flow rate, G = gas flow rate and m = slope of the equilibrium line)

Select an option to see the answer and solution.

When both the fluids flow concurrently in an absorber, the slope of the operating line is

Select an option to see the answer and solution.

Smoke is an example of

Select an option to see the answer and solution.

The value of L/mG ratio for economical absorption operation ranges from

Select an option to see the answer and solution.

Swenson-Walker crystalliser is a __________ unit

Select an option to see the answer and solution.

Steam distillation is used to

Select an option to see the answer and solution.

For water-ethanol system, the minimum reflux ratio

Select an option to see the answer and solution.

At what value of reflux ratio, number of theoretical plates in a distillation column is minimum?

Select an option to see the answer and solution.

Fenske-Underwood equation used for calculating the minimum number of theoretical plates in distillation column is valid for

Select an option to see the answer and solution.

Steam distillation is used to separate

Select an option to see the answer and solution.

According to Chilton-Colburn analogy for mass transfer,   is equal to

Select an option to see the answer and solution.

The percentage humidity is less than the relative humidity only at __________ percent humidity.

Select an option to see the answer and solution.

Unsaturated air (with dry bulb temperature and dew point being 35°C and 18°C respectively) is passed through a water spray chamber maintained at 15°C. The air will be cooled

Select an option to see the answer and solution.