The number of mole of sodium sulphite needed to react with one mole of \( \mathrm{KMnO}_{4} \) i...
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The number of mole of sodium sulphite needed to react with one mole of \( \mathrm{KMnO}_{4} \) in acidic solution :
(A) \( 4 / 5 \)
(B) \( 5 / 2 \)
(C) 1
(D) \( 3 / 5 \)
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