Subject: Inorganic Chemistry · Chapter: D Block · Topic: D Block – General · Exam: JAM 2005-2022 · Marks: 2 · Difficulty: Medium
A filter paper moistioned with ammonical sodium nitroprusside solution turns violet on contact with a drop of alkaline $\mathrm{Na}_{2} \mathrm{S}$ solution. The violet colour is due to the formation of