JEE Main 2022 · 29 Jun · Shift 1 · Chemistry Q68

ChemistrySingle correct+4 / -1Question 68 of 90

Which one of the following reactions indicates the reducing ability of hydrogen peroxide in basic medium ?

\mathrm{HOCl+H_2O_2\rightarrow H_3O^++Cl^-+O_2}

\mathrm{PbS+4H_2O_2\rightarrow PbSO_4+4H_2O}

\mathrm{2MnO_4^-+3H_2O_2\rightarrow2MnO_2+3O_2+2H_2O+2OH^-}

\mathrm{Mn^{2+}+H_2O_2\rightarrow Mn^{4+}+2OH^-}

Answer and worked solution

Official answer: C

Reducing in base. $\mathrm{H_2O_2}$ reduces $\mathrm{MnO_4^-}$ to $\mathrm{MnO_2}$ , releasing $\mathrm{O_2}$ and $\mathrm{OH^-}$ .

(C)

Topics:Water and hydrogen peroxide Balancing redox reactions

JEE Main 2022 · 29 Jun · Shift 1, Chemistry question 68