Identify disproportionation reaction

Question:

Identify disproportionation reaction

(i) CH4 + 2O2→ CO2 + 2H2O

(ii) CH4 + 4Cl2→ CCl4 + 4HCl

(iii) 2F2 + 2OH-→ 2F- + OF2 + H2O

(iv) 2NO2 + 2OH→ NO2- + NO3- + H2O

Solution:

Option (iv) 2NO2 + 2OH→ NO2- + NO3- + H2O  is the answer.

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