1.

If the fractional recovery of light key in the distillate is FR, then light key in the feed is

A. Dx<sub>D</sub>= (FR<sub>D</sub>)+Fx<sub>LK</sub>
B. Dx<sub>D</sub>= (FR<sub>D</sub>)/Fx<sub>LK</sub>
C. Dx<sub>D</sub>= (FR<sub>D</sub>)Fx<sub>LK</sub>
D. Dx<sub>D</sub>= (FR<sub>D</sub>)
Answer» D. Dx<sub>D</sub>= (FR<sub>D</sub>)


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