Petroleum is separated into useful fractions by fractional distillation.
Separation occurs in a fractionating column.
Some properties of three of these fractions are shown.
Which statement is correct?
1 )
Fraction 1 has a higher boiling point range than fraction 2.
2 )
Fraction 2 is removed from a higher point in the fractioning tower than fraction 1.
Molecules in fraction 3 have shorter chains than those in fraction 2.
4 )
None of the fractions is liquid at room temperature.
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