$\mathrm{H}_{2} \mathrm{SO}_{4}$ and $\mathrm{H}_{2} \mathrm{SO}_{3}$ can be distinguished by the addition of

$\mathrm{H}_{2} \mathrm{SO}_{4}$ and $\mathrm{H}_{2} \mathrm{SO}_{3}$ can be distinguished by the addition of
  1. magnesium powder
  2. $\mathrm{NaHSO}_{4}$ solution
  3. $\mathrm{FeCl}_{3}$ solution
  4. litmus solution

Solution

$\mathrm{FeCl}_{3}$ acts as oxidant and $\mathrm{H}_{2} \mathrm{SO}_{3}$ as
reductant

Asked in: JEE-TOPICTESTS-CHEMISTRY

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