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Crude Oil, Hydrocarbons And Alkanes (GCSE Chemistry)

The following is a GCSE Chemistry test covering 'Crude Oil, Hydrocarbons And Alkanes' from the broader topic Organic Chemistry. The test is geared towards the AQA exam board style syllabus.
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What is the name of the process used to separate crude oil into useful fractions?
What is meant by the term “saturated” when describing alkanes?
Which statement about fractional distillation is true?
Which property explains why alkanes are insoluble in water?
In a fractionating column, where are the lightest (smallest) hydrocarbon fractions collected?
What does the term “refinery gas” refer to?
As carbon chain length increases in straight-chain alkanes, which of these trends is generally observed?
Which fraction of crude oil would most likely be used to make petrol (gasoline) for cars?
Which of the following is a pollutant commonly produced by incomplete combustion of hydrocarbons?
Which statement best describes alkanes?
What is the molecular formula of butane?