Heat Transfer
In a forward feed multiple effect evaporator, the pressure is

Lowest in last effect
Dependent on the number of effects
Same in all effects
Highest in last effect

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Heat Transfer
The advantage of backward feed multiple effect evaporators over forward feed units is that

Heat sensitive material can be handled
Most concentrated liquid is at highest temperature
Equal heat transfer co-efficients exist in various effects
There is no additional cost of pumping

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