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The products A and B formed in the following reaction scheme are respectively

Correct answer

2

Step-by-step solution

Benzene reacts with concentrated nitric acid at 323 -333 K in the presence of concentrated sulphuric acid to form nitrobenzene. This converts to Aniline on reaction with Sn / HCl . The chemical process used in converting a primary aromatic amine into the corresponding diazonium salt of the amine is commonly referred to as diazotization by using sodium nitrite and HCl . This on reaction with phenol leads to diazotisation coupling.

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