Mass Transfer

With increase in temperature, the leaching rate increases because of the _____________________?

Byadmin February 14, 2019August 22, 2021

With increase in temperature, the leaching rate increases because of the _____________________?

A. Increased diffusivity
B. Decreased viscosity of liquid
C. Both A. and B.
D. Neither A. nor B.

Mass Transfer

With lapse of time, the overhead composition of light component in case of batch distillation with constant reflux__________________?

With lapse of time, the overhead composition of light component in case of batch distillation with constant reflux__________________?

A. Increases
B. Decreases
C. Remain same
D. May increase or decrease; depends on system

Read More With lapse of time, the overhead composition of light component in case of batch distillation with constant reflux__________________?
Mass Transfer

In case of absorption, both the operating and equilibrium lines will be straight for______________?

In case of absorption, both the operating and equilibrium lines will be straight for______________?

A. Isothermal operation
B. Dilute solutions
C. Dilute solutions and isothermal operation
D. None of these

Read More In case of absorption, both the operating and equilibrium lines will be straight for______________?
CHEMICAL ENGINEERING | Mass Transfer

Compound A is extracted from a solution of A + B into a pure solvent S. A Co-current unit is used for the liquid-liquid extraction. The inlet rate of the solution containing A is 200 moles of B/hr.m2 and the solvent flow, rate is 400 moles of S/m2. hr. The equilibrium data is represented by Y = 3X2 , where Y is in moles of a A/moles of B and X is in moles A/moles of S. The maximum percentage extraction achieved in the unit is

Question: Compound A is extracted from a solution of A + B into a pure solvent S. A Co-current unit is used for the liquid-liquid extraction. The inlet rate of the solution containing A is 200 moles of B/hr.m2 and the solvent flow, rate is 400 moles of S/m2. hr. The equilibrium data is represented by Y = 3X2 , where Y is in moles of a A/moles of B and X is in moles A/moles of S. The maximum percentage extraction achieved in the unit is
[A].

25%
[B].
50%
[C].
70%
[D].
90%

Answer: Option B

Explanation:

No answer description available for this question.

Read More Compound A is extracted from a solution of A + B into a pure solvent S. A Co-current unit is used for the liquid-liquid extraction. The inlet rate of the solution containing A is 200 moles of B/hr.m2 and the solvent flow, rate is 400 moles of S/m2. hr. The equilibrium data is represented by Y = 3X2 , where Y is in moles of a A/moles of B and X is in moles A/moles of S. The maximum percentage extraction achieved in the unit is
Mass Transfer

At __________________ reflux, theoretical number of plates in a distillation coloumn is calculated using Fenske-Underwood equation?

At __________________ reflux, theoretical number of plates in a distillation coloumn is calculated using Fenske-Underwood equation?

A. Operating
B. Total
C. Minimum
D. Maximum permissible

Read More At __________________ reflux, theoretical number of plates in a distillation coloumn is calculated using Fenske-Underwood equation?
Mass Transfer

In which of the following unit operations, the selectivity is an important parameter ?

In which of the following unit operations, the selectivity is an important parameter ?

A. Distillation
B. Solvent extraction
C. Absorption
D. None of these

Read More In which of the following unit operations, the selectivity is an important parameter ?
Mass Transfer

In case of steam distillation, the steam leaving the liquid is not completely saturated with distillate vapour, because_______________?

In case of steam distillation, the steam leaving the liquid is not completely saturated with distillate vapour, because_______________?

A. Temperature is less
B. Total pressure is less
C. Mixing of steam with the material being vaporised is not so intimate as to result in equilibrium
condition
D. Saturated steam is used for steam distillation

Read More In case of steam distillation, the steam leaving the liquid is not completely saturated with distillate vapour, because_______________?

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