JEE Main 2022 · 26 June · morning · Single correct · +4 / −1

Which statement is not true with respect to nitrate ion test?

  1. (a) A dark brown ring is formed at the junction of two solutions.
  2. (b) Ring is formed due to nitroferrous sulphate complex.
  3. (c) The brown complex is [Fe(H₂O)₅ (NO)]SO₄.
  4. (d) Heating the nitrate salt with conc. H₂SO₄, light brown fumes are evolved.
Answer and solution

Answer (b) Ring is formed due to nitroferrous sulphate complex.

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Study Qualitative Analysis — Salt Analysis

Asked about 80 times in JEE Main since 2020. This question is from 2022.