IMAT Oxidation number questions

43 questions · Chemistry

Rules for assigning oxidation numbers to atoms in elements, ions and compounds, and using them to spot redox changes.

Sample questions

  1. 1IMAT 2025 Q34

    In which of these compounds does Cl have an oxidation number of +3:
    1. AHClO₃
    2. BHClO
    3. CHClO₂
    4. DCl₂
    5. EHCl
  2. 2IMAT 2025 Q35

    An oxidation number cannot be:
    1. Aan irrational number
    2. Ba number with a decimal point
    3. Ca negative number
    4. Da positive number
    5. Ezero
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