Amines · Class 12 · CBSE · Science Chemistry
Reaction of aniline with nitrous acid (HNO2) at 273-278 K followed by treatment with beta-naphthol in alkaline medium yields a dye of which color?
Practice question from Amines (Class 12 · CBSE · Science Chemistry), with the correct answer and a step-by-step solution.
easy · MCQ · Q-2A830E
Reaction of aniline with nitrous acid () at 273-278 K followed by treatment with -naphthol in alkaline medium yields a dye of which color?
- A.Blue
- B.Yellow
- C.RedCorrect answer
- D.Green
Solution
Aniline reacts with at 273-278 K to form benzene diazonium chloride. Coupling of benzene diazonium chloride with -naphthol in an alkaline medium gives an orange-red (or red) azo dye.
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