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Mass Transfer

Mass Transfer
What is the reflux ratio at total reflux?

Data insufficient
Unity
Zero
Infinity

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Mass Transfer
Moisture in a solid exerting an equilibrium vapour pressure equal to that of the pure liquid at the same temperature is called the __________ moisture.

Critical
Unbound
Bound
Free

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Mass Transfer
Diffusion in concentrated solutins differs from that in dilute solutions, because of the change in the __________ with the concentration of the solution.

Viscosity
Degree of ideality
Both A & B
Neither A nor B

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Mass Transfer
Dry bulb temperature of the gas is __________ the wet bulb temperature.

Less than
More than
None of these
Equal to

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Mass Transfer
Berl saddle made of carbon cannot be used for

SO₂
Alkalis
H₂SO₄
Oxidising atmosphere

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Mass Transfer
Which of the following same diameter columns gives lowest pressure drop per unit height?

Randomly packed column
Sieve-plate column
Packed column (stacked)
Bubble-cap column

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