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Mass Transfer

Mass Transfer
The value of L/mG ratio for economical absorption operation ranges from

1.25 to 2.0
2.5 to 3.5
0.8 to 1.2
0.5 to 0.8

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Mass Transfer
Raoult's law is applicable to the

Non-ideal gases
Ideal solutions
Mixture of water and alcohol
Real solutions

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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
The unit of volumetric diffusivity is

Cm²/sec
Cm²/seC₂
Cm/sec
Cm³/sec

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Mass Transfer
As complete saturation of an adsorbent is approached, the differential heat of adsrop-tion approaches

None of these
That of normal condensation
Integral heat of adsorption
Zero

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Mass Transfer
Which of the following employs an accessory known as 'drift eliminator' ?

Rotary dryer
Mechanical draft cooling tower
Multiple effect evaporator
Rotating disc contactor

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