Lesson 6D.1

6D.1 Classifying and reacting halogenoalkanes Quiz: Pearson Edexcel Chemistry, Unit 6

20 questions

Written by Revision Ninja · Last reviewed 11 October 2026

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Lesson 6D.1, Classifying and reacting halogenoalkanes: 20 multiple choice questions for the Pearson Edexcel Chemistry (9CH0), Unit 6: Organic Chemistry I, written with Revision Ninja.

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The 20 questions

  1. How is a primary halogenoalkane defined?

    • The halogen is bonded to a carbon that also carries an OH group
    • The carbon bonded to the halogen is attached to three other carbon atoms
    • The carbon bonded to the halogen is attached to two other carbon atoms
    • The carbon bonded to the halogen is attached to one other carbon atom

  2. Which compound is a tertiary halogenoalkane?

    • 1-bromopropane, a primary halogenoalkane in which the bromine is on an end carbon
    • 2-bromobutane, a secondary halogenoalkane in which the bromine-bearing carbon has two carbon neighbours
    • 2-bromo-2-methylpropane
    • 1-chlorobutane, a primary chloroalkane with the chlorine on the terminal carbon of a four-carbon chain

  3. Which compound is a secondary halogenoalkane?

    • 2-bromobutane
    • 1-bromobutane
    • 2-methyl-2-bromopropane
    • Bromobenzene

  4. What is a nucleophile?

    • A species that removes a proton from carbon
    • A species that loses an electron to form a radical
    • A species that accepts an electron pair from a carbon atom
    • A species that donates an electron pair to form a new covalent bond

  5. What is the product of bromoethane heated with aqueous potassium hydroxide?

    • Ethylamine
    • Ethanol
    • Ethene
    • Ethanal

  6. When 1-bromobutane is warmed with aqueous silver nitrate in ethanol, what precipitate forms?

    • White silver chloride
    • Cream silver bromide
    • Brown silver oxide
    • Yellow silver iodide

  7. Which colour precipitate is formed with silver nitrate when a chloroalkane is hydrolysed?

    • Black
    • Cream
    • White
    • Yellow

  8. What is the product when bromoethane reacts with potassium cyanide in ethanol?

    • Propanenitrile, CH3CH2CN
    • Ethanenitrile, CH3CN
    • Propanoic acid, CH3CH2COOH
    • Ethanamide, CH3CONH2

  9. Which compound is produced when 1-bromobutane reacts with excess ammonia?

    • Butene, an alkene formed by elimination of hydrogen bromide from the bromoalkane using hot ethanolic KOH
    • Butanenitrile, a nitrile formed by reaction of the bromoalkane with cyanide ions in ethanol
    • Butylamine, a primary amine
    • Butan-1-ol, an alcohol formed by hydrolysis of the bromoalkane with aqueous hydroxide ions

  10. What is the role of hydroxide ions in the reaction of 2-bromobutane with ethanolic potassium hydroxide?

    • They act as a catalyst that is not used up
    • They act as an oxidising agent
    • They act as a base, removing a proton to form an alkene
    • They act as a nucleophile attacking the carbon to form an alcohol

  11. What mass of ethanol (Mr = 46.0) is formed from 10.9 g of bromoethane (Mr = 109)?

    • 2.30 g
    • 4.60 g
    • 10.9 g
    • 9.20 g

  12. Which reagent converts a halogenoalkane into a nitrile with an extra carbon atom?

    • Ammonia, NH3
    • Potassium cyanide, KCN
    • Potassium iodide, KI
    • Silver nitrate, AgNO3

  13. What is the name of the product of 2-bromo-2-methylpropane with aqueous potassium hydroxide?

    • 2-bromo-2-methylpropanol
    • 2-methylpropan-1-ol
    • 2-methylpropene
    • 2-methylpropan-2-ol

  14. Why is aqueous silver nitrate used to test for halogenoalkanes?

    • Silver nitrate dissolves the halogen atom completely so that no residue is left in the solution
    • Silver nitrate reacts with the carbon chain to form a gas that is released as bubbles in the test tube
    • Silver nitrate acts as a base that removes hydrogen from the alkyl group to form an alkene
    • Hydrolysis releases halide ions, which combine with silver ions to form a coloured precipitate

  15. What is the name of CH3CH2CH2Cl?

    • Chloroethane
    • 1-chloropropene
    • 1-chloropropane
    • 2-chloropropane

  16. Why is an excess of ammonia used when making primary amines from halogenoalkanes?

    • To make the reaction exothermic at room temperature so that it proceeds without any heating
    • To reduce further substitution of the amine product by more halogenoalkane
    • To convert the amine into an alkene by removing the nitrogen from the molecule under heat
    • To remove the halide ion as a gas by bubbling the mixture with ammonia at room temperature

  17. Which product forms when 1-iodobutane reacts with aqueous silver nitrate in ethanol at room temperature?

    • White silver chloride precipitate
    • Yellow silver iodide precipitate
    • Cream silver bromide precipitate
    • No precipitate because iodide does not form silver salts

  18. Which description best defines hydrolysis of a halogenoalkane?

    • Reaction with water or hydroxide ions in which the C-X bond is replaced by C-OH
    • Reaction with UV light that forms radicals only and leads to the chain reaction of chlorination
    • Reaction with oxygen gas that produces carbon dioxide and water as the only products of combustion
    • Reaction with hydrogen gas in which the C=C bond is saturated by addition over a metal catalyst

  19. What is the product when 2-chloropropane is heated with aqueous potassium hydroxide?

    • Propene
    • Propan-1-ol
    • Propanone
    • Propan-2-ol

  20. Which halogenoalkane gives an alkene when heated with ethanolic potassium hydroxide?

    • 2-bromobutane
    • 1-chloro-2-methylpropan-2-ol
    • Bromomethane
    • Chloromethane

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