The capacity of double-effect evaporator is less than half of the capacity of two single effects, each of which is operating over same terminal temperature difference, when the
Options:
A .  solution has an elevation of boiling point.
B .  evaporators operate under vacuum.
C .  evaporators opreate at atmospheric pressure.
D .  none of these.
Answer: Option A Answer: (a).solution has an elevation of boiling point.
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