fractional distillation 0.0 / 5 ? ChemistryFunctional groups: Alkanes, alcohols, carboxylic acids and estersGCSEAQA Created by: naomi01Created on: 11-05-15 13:27 In the fractional distillation of crude oil, where is the hottest part of the fractionating column? The bottom 1 of 10 Which fraction leaves the tower at the very top? Refinery gases 2 of 10 Which is a use for kerosene (paraffin)? Aeroplane fuel 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 molecule 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 such a way that they could not decompose normally 7 of 10 What type of molecule is used as the starting point in cracking? A large hydrocarbon molecule 8 of 10 What conditions are used for cracking? high temperature, catalyst 9 of 10 What are the typical products of cracking? A short alkene and short alkane 10 of 10
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