Mass Transfer
On moving the feed line (q-line) from saturated liquid feed (vertical position) to saturated vapor feed (horizontal feed), if the slope of both the operating lines are to be increased, then it will result in

Greater degree of separation with a fixed number of trays
Increased reboiler load
None of these
Increased reflux ratio

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Mass Transfer
Steam distillation is not recommended to be used, if the

Azeotropic mixture is to be separated and the final product is miscible with water
Material can not be distilled by indirect heating even under low pressure, because of the high boiling temperature
Liquids decompose, if distilled directly at atmospheric pressure
Material to be distilled is thermally unstable or has the tendency to react with other components associated with it, at the boiling temperature

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