Question

In the preparation of $H_2{O}_2$ by auto-oxidation method, the starting substance is:

• A. 2-ethylanthraquinone.
• B. 2-ethylanthraquinol.
• C. N-methylaniline.
• D. p-benzoquinone.

Answer 1

Answer: (A)

In the auto-oxidation method, 2-Ethylanthraquinone is reduced to 2-ethylanthraquinol by Hydrogen in the presence of palladium. This 2-ethylanthraquinol is oxidised by air to 2-ethylanthraquinone again.

Then $H_2{O}_2$ forms. so here the starting substance is 2-ethylanthraquinone.

Hence, the correct option is $\text{A}$