[SEE DIAGRAM] P(aq.) --(Zn + dil. HCl)-- Q↑ Q↑ --(FeCl3)-- R↓ + T (coloured ion) Q↑ --(MnO4^- / H^+)-- R↓ (white turbidity) + Mn2+(aq.) P(aq.) --(Δ)-- R↑ + S

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[SEE DIAGRAM]
P(aq.) --(Zn + dil. HCl)--> Q↑ 
Q↑ --(FeCl3)--> R↓ + T (coloured ion)
Q↑ --(MnO4^- / H^+)--> R↓ (white turbidity) + Mn2+(aq.)
P(aq.) --(Δ)--> R↑ + S

Prashant Kotian · Accepted Answer

Correct answer: B. The species P is SO3^2- and S is S2O3^2-.

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