JEE Main 2022 · 29 Jul · Shift 1 · Chemistry Q77

ChemistrySingle correct+4 / -1Question 77 of 90

Benzenediazonium chloride reacts with 'A' in NaOH to give an orange-red dye (Product), as shown.

Which among the following represent reagent 'A' ?

2-Naphthol (β-naphthol)

1-Naphthol (α-naphthol)

Aniline

1-Naphthylamine

Answer and worked solution

Official answer: A

Coupling. The diazonium ion couples with alkaline 2-naphthol at C-1 to give the orange-red dye 1-phenylazo-2-naphthol.

(A)

Topics:Diazonium salts

JEE Main 2022 · 29 Jul · Shift 1, Chemistry question 77