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Mass Transfer

Mass Transfer
Tea percolation employs

Absorption
None of these
Liquid-liquid extraction
Leaching

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

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

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Mass Transfer
In case of absorption, both the operating and equilibrium lines will be straight for

None of these
Dilute solutions and isothermal operation
Dilute solutions
Isothermal operation

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Mass Transfer
Danckwerts developed the __________ theory.

Surface renewal
Penetration
None of these
Film

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Mass Transfer
Molecular seives are regenerated by heating to __________ °C.

200-330
> 500
< 150
> 1000

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Mass Transfer
During dehumidification of unsaturated air wet bulb temperature & partial pressure of vapor are not constant. However, during evaporative cooling process with recirculated water supply, the __________ remains constant.

None of these
Relative humidity
Partial pressure of water vapor
Wet bulb temperature

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