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Mass Transfer

Mass Transfer
Leaching of coarse solid lumps is also termed as

Agitation and settling
Dissolution
Percolation
Decoction

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

Dry bulb temperature
Wet bulb temperature
None of these
Dew point

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Mass Transfer
At a given equilibrium pressure, with increase in temperature, the concentration of adsorbed gas on solid adsorbant

Increases exponentially
Increases
Decreases
Remains unchanged

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Mass Transfer
Calculation of mass transfer co-efficient is mostly/normally done using __________ theory.

Film
None of the listed here
Penetration
Surface renewal

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Mass Transfer
Out of the following gas-liquid contacting devices, for a given set of operating conditions, gas pressure drop is the least in __________ tower.

Perforated tray
Bubble cap
Packed
Wetted wall

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Mass Transfer
Which is the controlling factor for a drum drier?

Heat transfer
Neither A nor B
Diffusion
Both A & B

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