JEE Main 2025 (3 Apr, Shift 2) Chemistry Q67: In the…

Question

In the following series of reactions identify the major products A & B respectively
Bromobenzene $\xrightarrow[\mathrm{H_2SO_4}]{\mathrm{SO_3}}$ A (Major product) $\xrightarrow{\mathrm{Br_2, Fe}}$ B (Major product)

Accepted Answer

Option 4: A: p-bromobenzenesulfonic acid ($\mathrm{SO_3H}$ para to Br); B: ring with Br (top), second Br (upper right) and $\mathrm{SO_3H}$ (bottom)

Answer

A: bromobenzene with $\mathrm{SO_3H}$ ortho to Br; B: ring with Br (top), $\mathrm{SO_3H}$ (upper right) and a second Br (lower right), i.e. $\mathrm{SO_3H}$ flanked by two Br

Answer

A: bromobenzene with $\mathrm{SO_3H}$ ortho to Br; B: ring with Br (top), $\mathrm{SO_3H}$ (upper right) and a second Br (lower left)

Answer

A: p-bromobenzenesulfonic acid ($\mathrm{SO_3H}$ para to Br); B: ring with Br (top), second Br (lower right) and $\mathrm{SO_3H}$ (bottom)

Answer

A: p-bromobenzenesulfonic acid ($\mathrm{SO_3H}$ para to Br); B: ring with Br (top), second Br (upper right) and $\mathrm{SO_3H}$ (bottom)

JEE Main 3 April 2025, Shift 2, Chemistry Q67

Same idea in other shifts