Mass Transfer

Mass Transfer

Freundlich equation applies to the adsorption of solute from___________________?

Freundlich equation applies to the adsorption of solute from___________________?

A. Dilute solutions, over a small concentration range
B. Gaseous solutions at high pressure
C. Concentrated solutions
D. None of these

Read More Freundlich equation applies to the adsorption of solute from___________________?
Mass Transfer

The slope of 9-line is determined by the__________________?

The slope of 9-line is determined by the__________________?

A. Reflux ratio
B. Plate efficiency to be achieved
C. Thermal condition of the feed
D. Relative volatility

Read More The slope of 9-line is determined by the__________________?
Mass Transfer

For a binary mixture with low relative volatility___________________?

For a binary mixture with low relative volatility___________________?

A. Use steam distillation
B. Use molecular distillation
C. Use high pressure distillation
D. An azeotrope may be formed during distillation

Read More For a binary mixture with low relative volatility___________________?
Mass Transfer

The interfacial area per unit volume of dispersion, in a gas-liquid contactor, for fractional hold up of gas = 0.1 and gas bubble diameter = 0.5 mm is given by (in m2/m3)_________________?

The interfacial area per unit volume of dispersion, in a gas-liquid contactor, for fractional hold up of gas = 0.1 and gas bubble diameter = 0.5 mm is given by (in m2/m3)_________________?

A. 500
B. 1200
C. 900
D. 800

Read More The interfacial area per unit volume of dispersion, in a gas-liquid contactor, for fractional hold up of gas = 0.1 and gas bubble diameter = 0.5 mm is given by (in m2/m3)_________________?
Mass Transfer

Plate efficiency in a distillation column is reduced due to the ______________ of liquid?

Plate efficiency in a distillation column is reduced due to the ______________ of liquid?

A. Entrainment
B. Foaming
C. Weeg & dumg
D. All A., B. & C.

Read More Plate efficiency in a distillation column is reduced due to the ______________ of liquid?
Mass Transfer

In extraction, as the temperature increases, the area of heterogeneity (area covered by binodal curve)____________________?

In extraction, as the temperature increases, the area of heterogeneity (area covered by binodal curve)____________________?

A. Decreases
B. Increases
C. Remains unchanged
D. None of these

Read More In extraction, as the temperature increases, the area of heterogeneity (area covered by binodal curve)____________________?
Mass Transfer

The wet and ‘dry bulb temperature for a vapour-gas mixture are 25°C and 30°C respectively. If the mixture is heated to 45°C at constant pressure, the wet bulb temperature will be ______________ °C ?

The wet and ‘dry bulb temperature for a vapour-gas mixture are 25°C and 30°C respectively. If the mixture is heated to 45°C at constant pressure, the wet bulb temperature will be ______________ °C ?

A. 25
B. > 25
C. < 25
D. – 25

Read More The wet and ‘dry bulb temperature for a vapour-gas mixture are 25°C and 30°C respectively. If the mixture is heated to 45°C at constant pressure, the wet bulb temperature will be ______________ °C ?
Mass Transfer

Raoult’s law does not apply, when the___________________?

Raoult’s law does not apply, when the___________________?

A. Size of component molecules are not equal
B. Attractive forces between like and unlike molecules in the solution are approximately equal
C. Component molecules are non-polar
D. Chemical combination or molecular association between unlike molecules takes place in the
formation of solution

Read More Raoult’s law does not apply, when the___________________?
Mass Transfer

In most of the mechanically agitated liquid-liquid extractors, baffles or horizontal compartmental plates are provided, which helps in_________________?

In most of the mechanically agitated liquid-liquid extractors, baffles or horizontal compartmental plates are provided, which helps in_________________?

A. Reducing the axial mixing
B. Increasing the rate of extraction
C. Maintaining the concentration difference between the two phases
D. All A , B & C.

Read More In most of the mechanically agitated liquid-liquid extractors, baffles or horizontal compartmental plates are provided, which helps in_________________?
Mass Transfer

Rayleigh’s equation applies to ________________ distillation?

Rayleigh’s equation applies to ________________ distillation?

A. Continuous
B. Steam
C. Differential
D. Flash

Read More Rayleigh’s equation applies to ________________ distillation?