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Mass Transfer

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

Gm
Kg
Litre
c

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

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

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

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

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Mass Transfer
With increase in temperature, the rate of leaching increases, because the

Viscosity of solvent decreases
Diffusivity of solute increases
Thermal conductivity of solute increases
None of these

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Mass Transfer
In the layout plan for a vacuum distillation unit, operating at 60 mm Hg, supported by a barometric condenser, the appropriate place for the location of vacuum drum for collecting the distillate will be

At ground level
10 metres above ground
5 metres above ground
2 metres above the ground

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Mass Transfer
As complete saturation of an adsorbent is approached, the differential heat of adsrop-tion approaches

Zero
Integral heat of adsorption
None of these
That of normal condensation

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