Question

In brown ring test, which compound is responsible for ring formation?

• A. $FeS{O}_4.N{O}_2$
• B. $FeS{O}_4.NO$
• C. $FeS{O}_4.N_{2}O$
• D. $FeS{O}_4.N_2{O}_2$

Answer 1

The correct option is B

$FeS{O}_4.NO$

As Ferrous sulphate reacts with Nitrogen oxide, a compound called Nitroso ferrous sulphate is formed which is responsible for brown ring formation.