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Mass Transfer

Mass Transfer
Rose oil is extracted from rose leaves using __________ distillation.

Low pressure
High pressure
Extractive
Steam

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Mass Transfer
Which of the following is an undesirable characteristic for the solvent used in gas absorption?

Low vapor pressure
High gas solubility
Low viscosity
None of these

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Mass Transfer
For achieving rapid drying rate in a spray dryer, the diameter of the particles in the feed should be in the range of __________ microns (1 mm = 1000 microns).

> 500
200-300
22190
43835

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Mass Transfer
Which of the following is a suitable absorbent for removal of H₂S from natural gas?

Vetrocoke solution
Dilute
Hot water
Monoethanol amine (MEA)

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Mass Transfer
Smoke is an example of

Liquid dispersed in gas
Solid dispersed in liquid
Solid dispersed in gas
Gas dispersed in liquid

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Mass Transfer
If mass diffusivity in a mixture is equal to the thermal diffusivity, then the Lewis number is

1
> 1
< 1

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