Question

Which of the following statements regarding electrophilic aromatic substitution is wrong?

• A. Acetyl and cyano substituents are both deactivating and m-directing.
• B. Alkyl groups are activating and o,p-directing.
• C. Ammonio groups are m-directing but amino groups are and o,p-directing.
• D. Chloro and methoxy substituents are both deactivating and o,p-directing.

Answer 1

Answer: (D)

Chloro and methoxy substituents are both deactivating and o,p-directing.

$-Cl$ and $-OMe$ substituents are not both deactivating and ortho-para oriented.

$-Cl$ is deactivating substituent and ortho-para orientation

$-OMe$ is activating substituent, ortho-para orientation.