11. Organic chemistry
A section of Chemistry, 0620
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Petroleum is a mixture of hydrocarbons. Describe two characteristics of a mixture.   a fractionating column for separating petroleum into different hydrocarbon fractions. lubricating oil bitumen refinery gas fraction gasoline A kerosene diesel oil fuel oil On Fig.2.1, draw an X inside the column to show where the hydrocarbon with the lowest volatility collects. Name the fraction labelled A in Fig.2.1. State the name of the fraction which has hydrocarbons with the longest chain length. State one use of the fuel oil fraction. 
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2023
Paper 3, Variant 2
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