# NEET Chemistry Hydrogen Questions Solved

A substance gives off ${\mathrm{O}}_{2}$ when heated, turns an acid solution of $\mathrm{KI}$ violet, and reduces acidified ${\mathrm{KMnO}}_{4}$. The substance is –

(A) ${\mathrm{SO}}_{3}$

(B) ${\mathrm{KNO}}_{3}$

(C) ${\mathrm{H}}_{2}{\mathrm{O}}_{2}$

(D) All of these

(C). These are the properties of ${\mathrm{H}}_{2}{\mathrm{O}}_{2}$.

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