JEE Main 2026 — Amines Question with Solution
JEE Main 2026 (28 January Shift 1)
Question
Given below are two statements:
Statement I: Griss-Ilosvay test is used for the detection of nitrite ion, which involves the use of sulphanilic acid and -naphthylamine reagent.
Statement II: In the above test, sulphanilic acid is diazotized by the acidified nitrite ion, which on further coupling with -naphthylamine forms an azo-dye.
In the light of the above statements, choose the correct answer from the options given below
Statement I: Griss-Ilosvay test is used for the detection of nitrite ion, which involves the use of sulphanilic acid and -naphthylamine reagent.
Statement II: In the above test, sulphanilic acid is diazotized by the acidified nitrite ion, which on further coupling with -naphthylamine forms an azo-dye.
In the light of the above statements, choose the correct answer from the options given below
Choose an option
Show full solutionCorrect option: A
Correct answer
ABoth Statement I and Statement II are true
Step-by-step explanation
The Griss-Ilosvay test for nitrite ion detection involves adding sulphanilic acid and -naphthylamine reagent. Acidified nitrite ions diazotize sulphanilic acid, forming a diazonium salt that undergoes azo coupling with -naphthylamine to produce a characteristic red azo-dye. Both statements accurately describe this test and its mechanism, making both statements true.
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