Skip to content
QuizQuip
Sign up
Back to Chapter 10
Mark schemePDF

Chapter 10 Practice Paper: Alcohols, Acids, Esters and Macromolecules — question paper

QuizQuipPractice Series
QQ/S4CH/CH10

Secondary 4 · Chemistry (G2 / G3)

Chapter 10 Practice Paper

Alcohols, Acids, Esters and Macromolecules

Duration: 40 minutes
Total: 30 marks
Name:
Class:
Register No.:
Date:

READ THESE INSTRUCTIONS FIRST

  • Write your name, class and register number in the spaces at the top of this page.
  • Answer all questions.
  • Give numerical answers correct to 3 significant figures unless stated otherwise, with units where a quantity is calculated.
  • Chemical equations should be balanced, with state symbols shown where the question asks for them.
  • The number of marks is given in brackets [ ] at the end of each question or part question.
  • The total number of marks for this paper is shown on its cover.

Original practice material written for the MOE Chemistry syllabus. It is not an official MOE or school examination paper. Chapter 10 (ethanol routes, oxidation, ethanoic acid, esters, polymers).

For Examiner’s Use
Section A/ 10
Section B/ 20
Total/ 30

Section A: Multiple-choice questions[10 marks]

Choose the one correct answer for each question.

  1. 1

    Which equation represents fermentation?

    1. AC₂H₄ + H₂O → C₂H₅OH
    2. BC₆H₁₂O₆ → 2C₂H₅OH + 2CO₂
    3. CC₂H₅OH + 2[O] → CH₃COOH + H₂O
    4. DCH₃COOH + C₂H₅OH → CH₃COOC₂H₅ + H₂O
    ( )
  2. 2

    Acidified potassium manganate(VII) is added to ethanol and warmed. The purple colour

    1. Astays purple — ethanol resists oxidation
    2. Bturns orange immediately
    3. Cturns the mixture blue
    4. Dfades to colourless as ethanoic acid forms
    ( )
  3. 3

    Ethanoic acid reacts with sodium carbonate. Which gas is released?

    1. Ahydrogen
    2. Boxygen
    3. Ccarbon dioxide
    4. Dethene
    ( )
  4. 4

    The ester formed from methanol and ethanoic acid is

    1. Aethyl ethanoate
    2. Bmethyl ethanoate
    3. Cmethyl ethanoic acid
    4. Dsodium ethanoate
    ( )
  5. 5

    Which polymer is made by condensation polymerisation?

    1. Apoly(ethene)
    2. BPVC
    3. Cnylon
    4. Dpoly(propene)
    ( )

Section B: Structured questions[20 marks]

Answer all questions in the spaces provided. Include state symbols where the question asks, and balance every equation.

  1. 1

    Two industrial routes make ethanol: fermentation of glucose and hydration of ethene.

    1. (a)

      Write the equation for each route.

      [2]
    2. (b)

      State the conditions for fermentation.

      [2]
    3. (c)

      Give one advantage of fermentation and one advantage of hydration.

      [2]
  2. 2

    Ethanol is oxidised to ethanoic acid in the laboratory.

    1. (a)

      Name the oxidising agent and state its colour change.

      [2]
    2. (b)

      Write the balanced equation, using [O] for the oxidising agent.

      [2]
    3. (c)

      Name the everyday product that is dilute ethanoic acid.

      [1]
  3. 3

    A student warms ethanol with ethanoic acid and concentrated sulfuric acid, then pours the mixture into water. A fruity-smelling oily layer floats on top.

    1. (a)

      Give the name of the fruity product and the equation for its formation, using the correct arrow symbol.

      [3]
    2. (b)

      The sulfuric acid does two different jobs in this reaction. Identify both of them.

      [2]
  4. 4

    Polymer A is made from chloroethene monomers. Polymer B is made from a diamine and a dicarboxylic acid, releasing water as it forms.

    1. (a)

      Name polymer A and state the type of polymerisation.

      [2]
    2. (b)

      Name polymer B, state its type of polymerisation, and explain why burning polymer B's PVC neighbour is hazardous.

      [2]

— End of paper —