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Mass Transfer

Mass Transfer
Schmidt number is given by

Sh x Pe
Μ/ρDAB
Re.Pe
Re/Pe

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Mass Transfer
Minimum reflux ratio in a distillation column results in

Minimum reboiler size
Maximum condenser size
Minimum number of trays
Optimum number of trays

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Mass Transfer
Which of the following adsorbent is used to decolourise yellow glycerine?

Silica gel
Activated carbon
Fuller
Alumina

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Mass Transfer
Tower diameter may be decreased by

Using higher reflux ratio
Use of increased tray spacing
Increasing the liquid flow rate
Increasing the vapour flow rate

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Mass Transfer
Which of the following is an undesirable property in a tower packing?

Low weight per unit volume
Large surface per unit volume
Large free cross-section
Large weight of liquid retained

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Mass Transfer
Deairation (removal of O₂) of water is done by

Absorption
Adsorption
Rectification
Ion-exchange

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