Mass Transfer
In a distillation column, with increase in the reflux ratio, the heat removed in the cooler

Decreases
Remains unaffected
And the heat required in reboiler decreases
Increases

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Mass Transfer
In steam distillation, the

Temperature is higher than the boiling point of either component
Temperature is 100°C
Temperature is more than 100° C
Product must be immiscible with water

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