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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
_______ number indicates the ratio of the rates of the heat and mass transfer incase of a cooling tower.

Lewis
Sherwood
Peclet
Stanton

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Mass Transfer
Which of the following is the most suitable for extraction in a system having very low density difference?

Pulsed extractor
Packed extraction tower
Centrifugal extractor
Mixer-settler extractor

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Mass Transfer
Which of the following parameters remains almost constant during adiabatic saturation of unsaturated air?

Dry bulb temperature
Dew point
None of these
Wet bulb temperature

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Mass Transfer
In a packed tower, the value of HETP equals HTUOG, when the equilibrium and the operating lines are (where, HETP = height equivalant to a theoretical plate HTUOG = overall gas phase height of a transfer unit)

Neither A nor B
Parallel
Both A & B
Straight

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Mass Transfer
The dimension of diffusivity is same as that of the

Density
Kinematic viscosity
Velocity head
Molal concentration

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