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Chemistry — Junior

Matter, materials, acids & bases, changes around us — Class VI–VIII

Sample Practice Questions

  1. Oxygen supports:

    • Combustion
    • Its own burning
    • Rusting only
    • Corrosion only
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    Answer: Combustion

  2. Burning of magnesium in air produces:

    • Magnesium chloride
    • Magnesium oxide (white ash)
    • Magnesium nitrate
    • Magnesium carbonate
    Show answer

    Answer: Magnesium oxide (white ash)

  3. The chemical formula of carbon dioxide is:

    • CO
    • CO₂
    • C₂O
    • C₂O₂
    Show answer

    Answer: CO₂

  4. The process of conversion of iron into iron oxide by atmospheric oxygen and moisture is:

    • Calcination
    • Combustion
    • Corrosion (rusting)
    • Galvanisation
    Show answer

    Answer: Corrosion (rusting)

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Practice Questions

Practise VVM questions on Chemistry — Junior. Answers are revealed after each question.

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