Mass Transfer If f = moles of vapour present per mole of feed, then the slope of feed line is (1 - f)/f - f/(1 - f) - (f - 1)/f - 1/f (1 - f)/f - f/(1 - f) - (f - 1)/f - 1/f ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer For a binary mixture with low relative volatility, continuous rectification to get pure products will require Low reflux ratio Small cross-section column Less number of trays High reflux ratio Low reflux ratio Small cross-section column Less number of trays High reflux ratio ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer To remove all the moisture from a wet solid it requires exposure to __________ air. Perfectly dry High temperature Highly humid None of these Perfectly dry High temperature Highly humid None of these ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The amount of steam required per unit quantity of distillate in case of steam distillation will be reduced by Raising the temperature Both A & B Neither A nor B Lowering the total pressure Raising the temperature Both A & B Neither A nor B Lowering the total pressure ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer An aqueous solution of methanol is to be distilled in a tray column. High pressure steam is available as a source of heat. For a given reflux ratio and overhead composition, two options are being explored; (i) a reboiler is used and (ii) no reboiler is used but steam is fed directly to the bottom of the column. As compared to option (i), in option (ii) More number of trays are required but the residue composition remains unchanged More number of trays are required and the residue composition is more dilute in methanol Less number of trays are required Composition of the residue remains unchanged More number of trays are required but the residue composition remains unchanged More number of trays are required and the residue composition is more dilute in methanol Less number of trays are required Composition of the residue remains unchanged ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Which of the following same diameter columns gives lowest pressure drop per unit height? Packed column (stacked) Randomly packed column Sieve-plate column Bubble-cap column Packed column (stacked) Randomly packed column Sieve-plate column Bubble-cap column ANSWER DOWNLOAD EXAMIANS APP
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