Acidified potassium permanganate solution is decolourised by :

Bleaching powder

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White vitriol

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Mohr's salt

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Microcosmic salt

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Solution

The correct option is C Mohr's salt
$2 K M n O_{4} + 2 H_{2} S O_{4} \to K_{2} S O_{4} + 2 M n S O_{4} + 3 H_{2} O + [O]$
$2 F e S O_{4} Mohr - Salt + H_{2} S O_{4} + [O] \to F e_{2} (S O_{4})_{3} + H_{2} O] \times 5$
$2 K M n O_{4} + 2 M n S O_{4} + 5 F e_{2} (S O_{4})_{3} + 8 H_{2} O$
Mohr $-$ Salt reducing agent $K M n O_{4} / H^{+} \to$ oxidising agent

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Q. Acidified potassium permanganate is decolourised by:

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Acidified potassium permanganate solution is decolourised by :

The correct option is C Mohr's salt2KMnO4+2H2SO4→K2SO4+2MnSO4+3H2O+[O]2FeSO4Mohr - Salt+H2SO4+[O]→Fe2(SO4)3+H2O]×52KMnO4+2MnSO4+5Fe2(SO4)3+8H2OMohr − Salt reducing agent KMnO4/H+→ oxidising agent