C9 Fractional Distillation 0.0 / 5 ? ChemistryC9 Crude OilGCSEAQA Created by: emewsCreated on: 30-12-17 15:29 In the fractional distillation of crude oil, where is the hottest part of the fractionating column? The bottom 1 of 10 Which fraction of crude oil leaves the tower at the very top? Refinery gas 2 of 10 Which is a use for kerosene (paraffin)? Kerosene is mainly used as fuel for aeroplanes. 3 of 10 Where do the longest hydrocarbon molecules condense? At the bottom of the tower 4 of 10 Which fractions are the hardest to ignite? The longest molecules 5 of 10 Which is the main compound in natural gas? Methane 6 of 10 What was coal originally formed from? Coal was formed from the remains of trees that were buried in a certain way that they could not decompose normally. 7 of 10 What type of molecule is used as the starting point in cracking? Large hydrocarbon molecules because cracking converts large hydrocarbon molecules into smaller and more useful hydrocarbons 8 of 10 What conditions are used for cracking? Cracking requires a high temperature and a catalyst. 9 of 10 What are the typical products of cracking? There will usually be at least one alkene and at least one alkane. 10 of 10
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