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Chemical Reactions

Types of chemical reactions, balancing equations, acids, bases, salts, and redox

Sample Practice Questions

  1. In a neutralisation reaction, an acid and a base form:

    • Only salt
    • Only water
    • Salt and water
    • Acid and salt
    Show answer

    Answer: Salt and water

  2. Fermentation converts sugars into:

    • Lactic acid only
    • Ethanol and CO₂
    • Glucose and water
    • Starch and oxygen
    Show answer

    Answer: Ethanol and CO₂

  3. Endothermic reactions:

    • Release heat
    • Absorb heat from surroundings
    • Produce electricity
    • Release light only
    Show answer

    Answer: Absorb heat from surroundings

  4. Corrosion of silver forms:

    • Silver oxide
    • Silver chloride
    • Silver sulphide (tarnish)
    • Silver nitrate
    Show answer

    Answer: Silver sulphide (tarnish)

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Practice Questions

Practise NSO questions on Chemical Reactions. Answers are revealed after each question.

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