Acidified potassium permanganate solution is decolourised by

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Bleaching powder

White vitriol

Mohr's salt

Microcosmic salt

answer is C.

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Detailed Solution

Mohr's salt.2KMnO4+8H2SO4+10FeSO4→K2SO4+2MnSO4+5Fe2SO43+8H2OMohr's salt decolourises KMnO4 by reducing Mn+7 ions to Mn+2 ions.

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