Which of the following halogen-containing compounds is correctly matched with its use or role?
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → Chloramphenicol – Treatment of typhoid fever
Many halogen compounds, natural and synthetic, are clinically useful. Chloramphenicol is a chlorine-containing antibiotic, produced by microorganisms, and it is very effective for the treatment of typhoid fever.
Option (1) Chloroquine – Anaesthetic during surgery — Incorrect. Chloroquine is a synthetic halogen compound used for the treatment of malaria; the anaesthetic is halothane.
Option (2) Halothane – Treatment of malaria — Incorrect. Halothane is used as an anaesthetic during surgery, not against malaria.
Option (4) Thyroxine – Antibiotic produced by microorganisms — Incorrect. Thyroxine is an iodine-containing hormone made by our body; its deficiency causes goiter.
NCERT (2026-27 edition):
Unit 6 Haloalkanes and Haloarenes (introduction) – “…Chlorine containing antibiotic, chloramphenicol, produced by microorganisms is very effective for the treatment of typhoid fever.”