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Mass Transfer

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

78
None of these
100
50

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Mass Transfer
In McCabe-Thiele method, at infinite reflux ratio

Both A & B
Neither A nor B
Both the operating lines coincide with diagonal
The overhead product is minimum

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

Hot water
Monoethanol amine (MEA)
Dilute
Vetrocoke solution

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Mass Transfer
Moisture contained by a substance in excess of the equilibrium moisture is called the __________ moisture.

Unbound
Bound
Critical
Free

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Mass Transfer
If f = moles of vapour present per mole of feed, then the slope of feed line is

- f/(1 - f)
- 1/f
- (f - 1)/f
(1 - f)/f

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Mass Transfer
An alkaline solution is used to reduce the concentration of carbon dioxide in a stream from 10% to 0.1% by absorption with irreversible chemical reaction. The overall number of transfer units based on gas phase is

100
4.605
9.21
0.001

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