alleryThe reaction between iron and copper(II) sulphate solution is an example of
ACombination reaction of two reactants
BDecomposition of a single compound
CNeutralisation of an acid and a base
DDisplacement reaction where Fe displaces Cu
Answer & Solution
Correct answer: D. Displacement reaction where Fe displaces Cu
1. Fe is more reactive than Cu (Fe is above Cu in the reactivity series).
2. So Fe displaces Cu from CuSO₄ solution.
3. Fe + CuSO₄ → FeSO₄ + Cu (blue solution turns pale green).
4. This is the classic syllabus displacement reaction demonstration.
_Source: syllabus Science, Ch 3 "Metals and Non-metals", §3.2.4_
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