February 2019 - Page 112 of 448 -

Which of the following unit operations makes use of Thiele-Geddes equation ?

Which of the following unit operations makes use of Thiele-Geddes equation ?

A. Liquid-liquid extraction
B. Solid-liquid extraction
C. Multi-component absorption with chemical reaction
D. Multi-component distillation

Which of the following unit operations makes use of Thiele-Geddes equation ? Read More »

Mass Transfer

The-relative volatility for separation of a non-ideal binary mixture by distillation should be ___________________?

Mass Transfer / admin

The-relative volatility for separation of a non-ideal binary mixture by distillation should be ___________________?

A. 0
B. 1
C. > 1
D. < 1

The-relative volatility for separation of a non-ideal binary mixture by distillation should be ___________________? Read More »

Mass Transfer

If moisture content of solid on dry basis is X, then the same on wet basis is____________________?

Mass Transfer / admin

If moisture content of solid on dry basis is X, then the same on wet basis is____________________?

A. X/(X + 1)
B. X/(1 – X)
C. (1 + X)/X
D. (1 – X)/X

If moisture content of solid on dry basis is X, then the same on wet basis is____________________? Read More »

Mass Transfer

For the air water system under ambient conditions, the adiabatic saturation temperature and the wet bulb temperature are nearly equal, because__________________?

Mass Transfer / admin

For the air water system under ambient conditions, the adiabatic saturation temperature and the wet bulb temperature are nearly equal, because__________________?

A. Water has a high latent heat of evaporation
B. Lewis number is close to unity
C. They are always equal under all circumstances
D. Solubility of the components of air in water is very small

For the air water system under ambient conditions, the adiabatic saturation temperature and the wet bulb temperature are nearly equal, because__________________? Read More »

Mass Transfer

In continuous distillation, the internal reflux ratio (Ri) and the external reflux ratio (Re) are related as_____________________?

Mass Transfer / admin

In continuous distillation, the internal reflux ratio (Ri) and the external reflux ratio (Re) are related as_____________________?

A. Ri = Re/(1 – Re)
B. Ri = (1 – Re)/Re
C. Ri = Re
D. Ri = Re/(1 + Re)

In continuous distillation, the internal reflux ratio (Ri) and the external reflux ratio (Re) are related as_____________________? Read More »

Mass Transfer

Separation of two or more components of a liquid solution cannot be achieved by___________________?

Mass Transfer / admin

Separation of two or more components of a liquid solution cannot be achieved by___________________?

A. Fractional crystallisation
B. Liquid extraction
C. Absorption
D. Evaporation

Separation of two or more components of a liquid solution cannot be achieved by___________________? Read More »

Mass Transfer

Solvent extraction is the terminology applied to the liquid-liquid extraction, which is preferred for the separation of the components of liquids, when____________________?

Mass Transfer / admin

Solvent extraction is the terminology applied to the liquid-liquid extraction, which is preferred for the separation of the components of liquids, when____________________?

A. Extracting solvent is cheaply & abundantly available
B. One of the liquid components is heat sensitive
C. Viscosity of liquid components is very high
D. One of the liquid components has very high affinity towards the solvent

Solvent extraction is the terminology applied to the liquid-liquid extraction, which is preferred for the separation of the components of liquids, when____________________? Read More »

Mass Transfer

Standard deviation is 18% and expected return is 15.5% then coefficient of variation would be__________?

Finance Mcqs, Financial Management Mcqs / admin

Standard deviation is 18% and expected return is 15.5% then coefficient of variation would be__________?

A. 0.86%
B. 1.16%
C. 2.50%
D.−2.5%

Standard deviation is 18% and expected return is 15.5% then coefficient of variation would be__________? Read More »

Finance Mcqs, Financial Management Mcqs

If the amount of the steam used in steam distillation is increased, the temperature of distillation__________________?

Mass Transfer / admin

If the amount of the steam used in steam distillation is increased, the temperature of distillation__________________?

A. Increases
B. Decreases
C. Remains unchanged
D. Depends on relative volatility

If the amount of the steam used in steam distillation is increased, the temperature of distillation__________________? Read More »

Mass Transfer

An example of elution is______________________?

Mass Transfer / admin

An example of elution is______________________?

A. Separation of uranium oxide from its ore by H2SO4 in a Pachuca tank
B. Separation of sugar from sugar beet by hot water
C. Dissolution of tannin out of tree barks by water
D. Recovery of vegetable oils from seeds

An example of elution is______________________? Read More »

Mass Transfer