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Mass Transfer

Mass Transfer
Molarity is defined as the number of gm moles of solute per __________ of solvent.

Litre
c
Gm
Kg

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Mass Transfer
In case of non-ideal gases and liquids, the molal diffusivity

Is independent of pressure
Is equal to the volumetric diffusivity
Varies directly as the pressure
Varies inversely as the pressure

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Mass Transfer
Humidity chart is useful for the solution of problems concerning condensation, vaporisation and air conditioning. At a given dry bulb temperature, value of humidity obtained from the humidity chart directly, is in terms of __________ humidity.

None of these
Molal
Percentage
Relative

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Mass Transfer
Stefan's law describes the mass transfer by

Diffusion
Both A & B
Neither A nor B
Bulk flow

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Mass Transfer
Which of the following remains constant during evaporative cooling process with recirculated water supply?

None of these
Wet bulb temperature
Partial pressure of vapour
Relative humidity

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Mass Transfer
In paper industry, paper is dried in a __________ dryer.

Heated cylinder
Conveyor
Festoon
Tunnel

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