Q. With lapse of time, the overhead composition of light component in case of batch distillation with constant reflux

View solution

Q. Lewis number, which is important in problems involving simultaneous heat and mass transfer, is the ratio of

View solution

Q. According to the film theory of mass transfer, the mass transfer co-efficient is proportional to (where, D = molecular diffusivity)

View solution

Q. Which of the following assumes constant molal vaporisation and overflow ?

View solution

Q. Absorption factor, for a fixed degree of absorption from a fixed amount of gas should be

View solution

Q. Selectivity of the solvent used in solvent extraction should be

View solution

Q. Pick out the wrong statement pertaining to leaching.

View solution

Q. Wet bulb and dry bulb temperatures becomes identical at __________ percent saturation curve.

View solution

Q. Can a cooling tower cool water below the wet bulb temperature of inlet air ?

View solution

Q. The solvent used in liquid-liquid extraction should have __________ less than one.

View solution

Q. The suitable evaporator for concentration of foaming liquids is a __________ evaporator.

View solution

Q. The ratio of Murphree plate efficiency to point efficiency is always > 1 in a __________ flow model.

View solution

Q. Tea percolation employs

View solution

Q. Flooding in a column results due to

View solution

Q. Which of the following gas-liquid contacting devices incurs the least pressure drop for a particular duty ?

View solution

Q. A liquid mixture contains 30% o-xylene, 60% p-xylene and 10%. m-xylene (all percentages in w/w). Which of the following statements would be true in respect of this mixture?

View solution

Q. Unsaturated air (with dry bulb temperature and dew point being 35°C and 18°C respectively) is passed through a water spray chamber maintained at 15°C. The air will be cooled

View solution

Q. The process employing desorption of the absorbed solute by a solvent is called

View solution

Q. Steam distillation is used for separation of high boiling

View solution

Q. The feed to fractionating column is changed from saturated vapour to saturated liquid. If the separation and reflux ratio remains unchanged, the number of ideal stages will

View solution