Question
Method used for separation of mixture of products (B and C) obtained in the following reaction is
JEE Main
Chemistry
Hydrocarbons
2026
JEE Main 2026 (28 January Shift 1)
JEE Main Chemistry Question (2026) — Solution
Options
- A. steam distillation
- B. simple distillation
- C. sublimation
- D. fractional distillation
Answer
D. fractional distillation
Step-by-step solution
Benzene reacts with Br _2 in the presence of FeBr _3 (Friedel-Crafts halogenation) to give bromobenzene. Bromobenzene on nitration with HNO _3 / H _2 SO _4 gives a mixture of ortho-bromonitrobenzene and para-bromonitrobenzene (since - Br is an ortho/para director). The two products (B and C) are separated by fractional distillation method due to their different boiling points.
Related: Chemistry — Hydrocarbons · All PYQ Banks