Crude oil is separated into different fractions using fractional distillation.
Which statement about this process is correct?
Hydrocarbons with larger molecules condense near the top of the fractionating column.
Fractional distillation is a chemical process that breaks covalent bonds in hydrocarbons.
The temperature inside the fractionating column decreases from the bottom to the top.
High-boiling-point fractions are collected as gases at the very top of the column.
83 exam-style questions on OCR GCSE Chemistry Organic chemistry. Each one has a worked solution and a mark scheme showing where the marks go.