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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
Deairation (removal of O₂) of water is done by

Ion-exchange
Absorption
Rectification
Adsorption

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Mass Transfer
Which of the following assumes constant molal vaporisation and overflow?

Ponchan-Savarit method
Enthalpy concentration method
McCabe-Thiele method
Plate absorption column

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Mass Transfer
If Rm is the minimum reflux ratio, the optimum reflux ratio may be around __________ Rm.

5
2.5 to 3
3 to 4
1.2 to 1.5

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Mass Transfer
Schmidt number is given by

Sh x Pe
Re/Pe
Μ/ρDAB
Re.Pe

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Mass Transfer
Pressure drop through plate tower as compared to that through packed tower, for the same duty will be

Either A or B; depends on the packing height
More
Less
Equal

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