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Mass Transfer

Mass Transfer
In a solution containing 0.30 Kg mole of solute and 600 kg of solvent, the molality is

2
0.6
1
0.5

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Mass Transfer
In distillation where q is defined as the moles of liquid flow in the stripping section per mole of feed introduced, for saturated liquid feed

q = 1
q < 1
q > 1
q = 0

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Mass Transfer
Raschig ring made of procelain cannot be used for treating concentrated

Hydrochloric acid
Alkalis
Sulphuric acid
Nitric acid

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Mass Transfer
Reboiler is considered as one theoretical plate, because

Reboiler itself contains one plate
None of these
Vapour is recycled to the column
Of the assumption that vapour and liquid leaving the reboiler are in equilibrium

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Mass Transfer
If the overall efficiency and Murphree plate efficiency are equal, then both the equilibrium and operating lines are

Both A & B
Neither A nor B
Straight
Parallel

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Mass Transfer
Dorr thickener is an equipment used for

Leaching
Clarification
Classification
Sedimentation

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