NEETChemistryHydrocarbons
What is the product of sulphonation when benzene is heated with fuming sulphuric acid (oleum)?
Options
- ABenzenesulfonic acid
- BToluene
- CBenzoic acid
- DPhenol
Correct answer
A. Benzenesulfonic acid
Step-by-step solution
When benzene is heated with fuming sulphuric acid (oleum), it undergoes sulphonation to form benzenesulfonic acid by replacing a hydrogen atom with a sulphonic acid group.