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February 2019

With increase in solvent rate, the number of transfer units, NtoG, for a fixed degree of absorption from a fixed amount of gas________________?

Mass Transfer /
With increase in solvent rate, the number of transfer units, NtoG, for a fixed degree of absorption from a fixed amount of gas________________?

A. Increases
B. Decreases
C. Decreases linearly
D. Remain unaffected

With increase in solvent rate, the number of transfer units, NtoG, for a fixed degree of absorption from a fixed amount of gas________________? Read More »

Mass Transfer

The temperature to which a vapour gas mixture must be cooled (at varying humidity) to become saturated is called the ______________ temperature?

Mass Transfer /
The temperature to which a vapour gas mixture must be cooled (at varying humidity) to become saturated is called the ______________ temperature?

A. Dew point
B. Wet bulb
C. Dry bulb
D. None of these

The temperature to which a vapour gas mixture must be cooled (at varying humidity) to become saturated is called the ______________ temperature? Read More »

Mass Transfer

Fenske equation for determining the minimum number of theoretical stages in distillation column holds good, when the_________________?

Mass Transfer /
Fenske equation for determining the minimum number of theoretical stages in distillation column holds good, when the_________________?

A. Relative volatility is reasonably constant
B. Mixture (to be separated) shows negative deviation from ideality
C. Mixture (to be separated) shows positive deviation from ideality
D. Multi-component distillation is involved

Fenske equation for determining the minimum number of theoretical stages in distillation column holds good, when the_________________? Read More »

Mass Transfer

Use of raschig rings in place of crushed stones as packing in packed beds (other things being same) ?

Mass Transfer /
Use of raschig rings in place of crushed stones as packing in packed beds (other things being same) ?

A. Increases pressure drop, increases surface area
B. Increases pressure drop, decreases surface area
C. Decreases pressure drop, increases surface area
D. Decreases pressure drop, decreases surface area

Use of raschig rings in place of crushed stones as packing in packed beds (other things being same) ? Read More »

Mass Transfer