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Which of the following statements are correct with respect to benzene?
(i) It forms triozonide with $\mathrm{O}_3$.
(ii) It is non-planar.
(iii) It forms only one monosubstituted product with $\mathrm{CH}_3 \mathrm{COCl}$ in the presence of anhyd. $\mathrm{AlCl}_3$.
(iv) If forms hexachlorobenzene on heating with $\mathrm{Cl}_2$ under photochemical condition.
Options:
(i) It forms triozonide with $\mathrm{O}_3$.
(ii) It is non-planar.
(iii) It forms only one monosubstituted product with $\mathrm{CH}_3 \mathrm{COCl}$ in the presence of anhyd. $\mathrm{AlCl}_3$.
(iv) If forms hexachlorobenzene on heating with $\mathrm{Cl}_2$ under photochemical condition.
Solution:
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Verified Answer
The correct answer is:
(i), (iii)
(ii) Benzene is a planar molecule.
(iii) Benzene when treated with a mixture of ethanoyl chloride $\mathrm{CH}_3 \mathrm{COCl}$ and aluminium chloride as catalyst. A ketone called phenyle thanone (monosubstituted) is obtained.
(iv) Benzene when heated with $\mathrm{Cl}_2$ under photochemical condition gives $1,2,3,4,5,6$-hexachlorocyclohexane.
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