Alcohols

Alcohols Quiz

Spec 4.29C–33C · Edexcel IGCSE Chemistry: Quiz

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5 questions, one answer each

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  1. 1. What functional group is present in all alcohols?

    • A. -COOH
    • B. -OH
    • C. -COO-
    • D. C=C

  2. 2. What is the product when ethanol is oxidised?

    • A. Ethene
    • B. Ethanoic acid
    • C. Ethyl ethanoate
    • D. Carbon monoxide

  3. 3. Which reagent is used in the laboratory to oxidise ethanol, turning from orange to green?

    • A. Bromine water
    • B. Potassium dichromate(VI) in dilute sulfuric acid
    • C. Universal indicator
    • D. Silver nitrate solution

  4. 4. A student ferments glucose to make ethanol but leaves the flask open to air throughout. Why does the ethanol yield decrease?

    • A. The yeast dies from lack of sugar
    • B. Airborne oxygen oxidises the ethanol produced into ethanoic acid
    • C. Air increases the temperature too much
    • D. Oxygen reacts with glucose directly to form ethanol

  5. 5. Comparing the two methods of manufacturing ethanol, which statement is correct?

    • A. Fermentation uses a non-renewable feedstock, while the ethene route uses a renewable one
    • B. The ethene route uses high pressure and temperature with a non-renewable feedstock; fermentation uses mild conditions with a renewable feedstock
    • C. Both methods require exactly the same conditions
    • D. Fermentation requires a metal catalyst, while the ethene route uses yeast

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