Which of the following is not a intramolecular redox?

CHEMISTRY · Single correct · CBSE · Chemistry · Redox Reactions · Redox Reactions

Problem

Which of the following is not a intramolecular redox? (1)

\text{NH}_4\text{NO}_2 \longrightarrow \text{N}_2 + 2\text{H}_2\text{O}

(2)

2\text{Mn}_2\text{O}_7 \longrightarrow 4\text{MnO}_2 + 3\text{O}_2

(3)

2\text{KClO}_3 \longrightarrow 2\text{KCl} + 3\text{O}_2

(4)

2\text{H}_2\text{O}_2 \longrightarrow 2\text{H}_2\text{O} + \text{O}_2