Chemistry 0620 · IGCSE · Separation and purification

Separation and purification — practice question

Fractional distillation is the method used to split petroleum into its fractions. Which of the following statements about the fractional distillation of petroleum is correct?

  • AThe kerosene fraction is used as a fuel for ships.
  • BThe fractions with the highest boiling points are extracted from the top of the fractionating column.
  • CThe naphtha fraction contains larger hydrocarbon molecules than the lubricating oil fraction.
  • DThe refinery gas fraction contains hydrocarbon molecules which consist of five atoms.

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