railway RRB Technician Grade 3 Mock Test 2024 Chemistry Redox Reactions

One of the following reactions is an example for disproportionation reaction. Identify the reaction.

1

4 H₃PO₃ → H₃PO₄ + PH₃

2

POCl₃ + 3H₂O → H₃PO₄ + 3HCl

3

\(\rm PCl_3 + 3H_2O → H_3PO_3 + 3HCl\)

4

2Ag + PCl₅ → 2AgCl + PCl₃

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