Question

Which of the following substituted benzene derivatives would produce three isomeric products when one more substituent is introduced?

• A. I , II and III
• B. I and III
• C. II and IV
• D. I and IV

Answer 1

The correct option is B I and III

When 1 more substituent is introduced.
(I) will give 3 isomeric products, ortho, meta and para disubstituted benzenes.
(II) will produce only 2 isomeric products.
(III) will produce three isomeric products.
(IV) will produce only one isomeric product.