Name of gas that can readily decolourises acidified ${\rm{KMn}}{{\rm{O}}_{\rm{4}}}$ solution:

${{\rm{P}}_{\rm{2}}}{{\rm{O}}_{\rm{5}}}$

NEET UG CHEMISTRY MCQ: P-BLOCK ELEMENTS

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Name of gas that can readily decolourises acidified

\mathrm{KMn}{\mathrm{O}_\mathrm{4}}

solution:

View answer and explanation

Correct option: C

\mathrm{S}{\mathrm{O}_\mathrm{2}}

Option C (

\mathrm{S}{\mathrm{O}_\mathrm{2}}

) is correct because sulfur dioxide readily decolorizes acidified

\mathrm{KMn}{\mathrm{O}_\mathrm{4}}

solution due to its reducing properties.