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Mass Transfer

Mass Transfer
The slope of the operating line for a single component co-current absorber when plotted in terms of mole ratio units is

+ve
∞
-ve

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

Hot water
Dilute
Vetrocoke solution
Monoethanol amine (MEA)

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Mass Transfer
Which of the following is the most suitable for extraction in a system having very low density difference?

Packed extraction tower
Centrifugal extractor
Mixer-settler extractor
Pulsed extractor

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Mass Transfer
Antibiotics are best handled in a

Sieve tray contractor
Podbielniak extractor
Rotating disc contactor
Pulsed column extractor

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Mass Transfer
In liquid extraction, if the selectivity is unity, then

No separation will occur
Separation of the constituents is the most effective
Amount of solvent required will be minimum
Solvent flow rate should be very low

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Mass Transfer
Which of the following processes is followed by unsaturated air (with dry bulb temperature 12°C and relative humidity 47%) passing through water spray washer (temperature of water being constant at 40°C?

Evaporative cooling
Heating only
Both heating and humidification
Humidification only

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