MEDIUMMCQ SINGLEJEE Mains ChemistryPhysical ChemistryRedox Reactions/Volumetric AnalysisConcept of Oxidation and Reduction
Which one of the following reaction involves oxidation- reduction?
A.H₂ + Br₂→ 2HBr✓ Correct
B.NaBr + HCl → NaCl + HBr
C.HBr + AgNO₃→AgBr + HNO₃
D.2NaOH + H₂SO₄→ Na₂SO₄ + 2H₂O
Explanation
In a redox reaction, one molecule is oxidised and other molecule is reduced i.e. oxidation number of reactants are changed. 0 0 1 1 2 2 2 → H Br HBr Here H₂ is oxidised and Br₂ is reduced, thus it is oxidation-reduction reaction.
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