KCET · Chemistry · Practical Chemistry
In the brown ring test, the brown colour of the ring is due to
- A ferrous nitrate
- B ferric nitrate
- C a mixture of \(\mathrm{NO}\) and \(\mathrm{NO}_{2}\)
- D nitrosoferrous sulphate
Answer & Solution
Correct Answer
(D) nitrosoferrous sulphate
Step-by-step Solution
Detailed explanation
Ring test : To the nitrate salt, add freshly prepared \(\mathrm{FeSO}_{4}\) solution and then conc \(\mathrm{H}_{2} \mathrm{SO}_{4}\) carefully by the sides of test-tube. A dark brown ring of ferrous nitrososulphate is formed.
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