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Mass Transfer

Mass Transfer
At 750°K and 1 atm, the approximate value of Schmidt number for air is

1
0.1
0.01
10

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Mass Transfer
Rayleigh's equation applies to __________ distillation.

Continuous
Flash
Steam
Differential

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Mass Transfer
Dorr thickener is an equipment used for

Clarification
Leaching
Sedimentation
Classification

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Mass Transfer
The equipment frequently used for adiabatic humidification-cooling operation with recirculating liquid is

Spray chamber
None of these
Natural draft cooling tower
Induced draft cooling tower

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Mass Transfer
H₂S is being absorbed in a gas absorber unit. The height of the transfer unit based on the overall mass transfer coefficient on the gas side is 0.4 m. The equilibrium data is given by, y = 1.5 x. The bulk concentration of H₂S has to be reduced from 0.05 to 0.001 mole fraction in the gas side. The height of the tower (in metres) corresponding to an operating line given by, y = 5x + 0.001 is

0.56
1.56
2
1

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Mass Transfer
Which of the following solutions will follow Raoult's law most closely?

35% solution of camphor in water
A solution of benzene, toluene and oxylene
A solution of polar organic compounds (not of homologs of a series)
35% solution of NH₃ in water

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