Chloroform is largely used for
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → Production of freon
The major use of chloroform today is in making the freon refrigerant R-22, \( \ce{CHClF2} \). Its old use as a general anaesthetic was given up because it is toxic.
Why the other options are incorrect
Option (2) As an antiseptic — Incorrect. This is the old use of iodoform, \( \ce{CHI3} \), whose antiseptic action comes from the iodine it liberates.
Option (3) Propellant for aerosol cans — Incorrect. This is a use of freons (chlorofluorocarbons) themselves, not of chloroform.
Option (4) Paint remover — Incorrect. This is a use of methylene chloride, \( \ce{CH2Cl2} \), which is also a solvent in the pharmaceutical industry.
NCERT (2026-27 edition):
Trichloromethane (Chloroform)
