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Mass Transfer

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

Tray
Vacuum
Tunnel
Rotary

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Mass Transfer
In case of an ideal solution, the total vapor pressure varies __________ with the composition expressed as mole fraction,

None of these
Inversely
Exponentially
Linearly

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Mass Transfer
McCabe-Thiele method of binary distillation does not assume that the

Heat of mixing is negligible
None of these
Molar latent heats of all components are equal
Sensible heat changes are negligible compared with latent heat changes

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Mass Transfer
Which of the following is an undesirable characteristic for the solvent used in gas absorption?

None of these
Low viscosity
Low vapor pressure
High gas solubility

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Mass Transfer
Unsaturated air (with dry and wet bulb temperatures being 35 and 25°C respectively) is passed through water spray chamber maintained at 35°C. The air will be

Humidified
Both A & B
Cooled
Dehumidified

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Mass Transfer
The critical moisture content in case of drying indicates the __________ rate period.

Beginning of constant
End of falling
None of these
Beginning of falling

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