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Mass Transfer

Mass Transfer
H₂S present in naphtha reformed gas is removed by absorbing with

K₂CO₃
Vacuum gas oil
Ethanolamine
HCl

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Mass Transfer
If f is defined as above, then which of the following applies to a feed at dew point?

0 < f < 1
F > 1
F < 1
F = 1

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Mass Transfer
At minimum reflux ratio for a given separation

Minimum number of the theoretical plates is required
Separation is most efficient
Number of plates is infinity
Number of plates is zero

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Mass Transfer
Dry bulb temperature of the gas is __________ the wet bulb temperature.

Equal to
None of these
Less than
More than

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Mass Transfer
NSc/NPr is called the

Lewis number
Psychrometric ratio
Sherwood number
Stantan number

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Mass Transfer
Calcium ammonium nitrate (a fertiliser) is dried in a __________ dryer.

Vacuum
Tunnel
Rotary
Tray

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