Benzene diazonium salt reacts with ethanol to form compound B, which on treatment with oleum gives compound C. Compound C, when treated with NaOH at 350∘C, followed by hydrolysis, forms compound D. Compound D is then treated with sodium dichromate in the presence of sulphuric acid. The final product is:

A

1,4- benzoquinone

B

Hydroquinone

C

Phenol

D

1,2- benzoquinone