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JEE CHEMISTRY MCQ: SOME BASIC CONCEPTS OF CHEMISTRY

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Analyzing +4 | -1
For the reaction,

FeS2+KMnO4+H∗⟶Fe3++H2SO4+Mn2++H2O\mathrm{FeS}_2+\mathrm{KMnO}_4+\mathrm{H}^* \longrightarrow \mathrm{Fe}^{3+}+\mathrm{H}_2 \mathrm{SO}_4+\mathrm{Mn}^{2+}+\mathrm{H}_2 \mathrm{O}

if the molar mass of FeS2\mathrm{FeS}_2 is M\mathrm{M}, then equivalent mass of FeS2\mathrm{FeS}_2 would be equal to
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Correct option: D
M15\frac{M}{15}
Option D (M15\frac{M}{15}) is correct because the n-factor for FeS2 in the given redox reaction is 15, so the equivalent mass is M/15.

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