JEE Main 2022 · 26 Jul · Shift 2 · Chemistry Q68

ChemistrySingle correct+4 / -1Question 68 of 90

The products obtained from a reaction of hydrogen peroxide and acidified potassium permanganate are

\mathrm{Mn^{4+}}

\mathrm{H_2O}

only

\mathrm{Mn^{2+}}

\mathrm{H_2O}

only

\mathrm{Mn^{4+}}

\mathrm{H_2O}

\mathrm{O_2}

only

\mathrm{Mn^{2+}}

\mathrm{H_2O}

\mathrm{O_2}

only

Answer and worked solution

Official answer: D

Acidic permanganate oxidises $\mathrm{H_2O_2}$ : $\mathrm{2MnO_4^-+5H_2O_2+6H^+\rightarrow2Mn^{2+}+5O_2+8H_2O}$ .

(D)

JEE Main 2022 · 26 Jul · Shift 2, Chemistry question 68