Formation of $\mathrm{Na}_4\left[\mathrm{Fe}(\mathrm{CN})_5 \mathrm{NOS}\right]$, a purple coloured complex…

Formation of $\mathrm{Na}_4\left[\mathrm{Fe}(\mathrm{CN})_5 \mathrm{NOS}\right]$, a purple coloured complex formed by addition of sodium nitroprusside in sodium carbonate extract of salt indicates the presence of :
  1. Sodium ion
  2. Sulphate ion
  3. Sulphide ion
  4. Sulphite ion

Asked in: JEE Main 2025 (02 Apr Shift 2)

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