UPSC CDS I 2019 GK Paper

In alkyl halides, functional group isomerism is not possible. In common organic compounds, halogens cannot form multiple bonds with carbon. Alkyl halides are a group of chemical compounds derived from alkanes containing one or more than one halogen. Halogen atoms are fluorine (F), chlorine (Cl), bromine (Br), iodine (I) and astatine (At).