48. Which of the following compounds will not undergo Friedel-Crafts acylation when treated with CH3CH2COCI,AICI3?(A) toluene (B) p-xylene (C) benzophenone (D) ethoxybenzene

45. What is the major difference between an antiaromatic and aromatic compound? (A) Only aromatic compounds follow Huckle's rule. (B) Antiaromatic compounds have at least one sp3 hybridized atom in the ring. (C) Antiaromatic compounds can assume a chair-like structure while aromatic compounds are nearly flat. (D) Aromatic compounds cannot have a charged atom in the structure.

48. Which of the following compounds will not undergo Friedel-Crafts acylation when treated with CH₃CH₂COCI,AICI₃?
(A) toluene
(B) p-xylene
(C) benzophenone
(D) ethoxybenzene

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