Gas-Liquid Contactors - Mass Transfer - GATE Questions

Mass Transfer - GATE-CH Questions

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Gas Liquid Contactors

GATE-CH-2000-1-16-mt-1mark

2000-1-16-mt

For the \(n^{\text {th}}\) tray (counted from the bottom of the distillation column), the Murphree tray efficiency is given by

\(\dfrac {y_{n+1}-y_n}{y^*_n-y_{n-1}}\)
\(\dfrac {y_{n}-y_{n-1}}{y^*_n-y_{n-1}}\)
\(\dfrac {y_{n-1}-y_n}{y_{n+1}-y_{n}}\)
\(\dfrac {y^*_{n}-y_{n-1}}{y^*_n-y_{n+1}}\)

GATE-CH-2005-19-mt-1mark

2005-19-mt

In a tray column, separating a binary mixture, with non-ideal stages, ONE of the following statements is TRUE,

Point efficiency can exceed 100%
Murphree efficiency cannot exceed 100%
Murphree efficiency can exceed 100%
Both Murphree and point efficiencies can exceed 100%

GATE-CH-2014-15-mt-1mark

2014-15-mt

Packed towers are preferred for gas-liquid mass transfer operations with foaming liquids because

in packed towers, high liquid to gas ratios are best handled
in packed towers, continuous contact of gas and liquid takes place
packed towers are packed with random packings
in packed towers, the gas is not bubbled through the liquid pool

GATE-CH-2017-15-mt-1mark

2017-15-mt

The composition of vapor entering a tray in a distillation column is 0.47. The average composition of the vapor leaving the tray is 0.53. The equilibrium composition of the vapor corresponding to the liquid leaving this tray is 0.52. All the compositions are expressed in mole fraction of the more volatile component. The Murphree efficiency based on the vapor phase, rounded to the nearest integer, is ____________ %

Answer

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Last Modified on: 24-Oct-2022

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