Subject :NSO Class : Class 9

The given diagram represents a fractionating column where petroleum is separated into various fractions. Arrange the fractions X, Y, Z in order of decreasing boiling point range and identify the fraction that condenses first.

AZ > Y > X; X

BZ > Y > X; Z

CX > Y > Z; Y

DY > Z > X; Z

Fractional distillation.