Question

Which of the following statements are correct with respect to benzene?
(i) It forms triozonide with $O _{3}$.
(ii) It is non-planar.
(iii) It forms only one monosubstituted product with $CH _{3} COCl$ in the presence of anhyd. $AlCl _{3}$.
(iv) If forms hexachlorobenzene on heating with $Cl _{2}$ under photochemical condition.

• A. (i), (ii)
• B. (ii), (iii)
• C. (i), (iii)
• D. (iii), (iv)

Answer 1

Answer: (C)

(ii) Benzene is a planar molecule.

(iii) Benzene when treated with a mixture of ethanoyl chloride $CH _{3} COCl$ and aluminium chloride as catalyst. A ketone called phenylethanone (monosubstituted) is obtained.



(iv) Benzene when heated with $Cl _{2}$ under photochemical condition gives $1,2,3,4,5,6-$ hexachlorocyclohexane.