Question

Addition of nitric acid to acidified $FeS{O}_4$ serves as a test for the former gives :

• A. ferrous sulphate solution (brown black)
• B. ferrous sulphate solution (brown)
• C. ferrous sulphate solution (black)
• D. ferrous sulphate solution (green)

Answer 1

The correct option is A ferrous sulphate solution (brown black)

Nitrate ions give a reddish brown coloured gas of nitogen dioxide which turns freshly prepared acidified ferrous sulphate solution brown black.