What is the common name of the compound HOCH2–CH(OH)–CH2OH?

The correct answer is Option (2) → Glycerol

HOCH₂–CH(OH)–CH₂OH has three –OH groups on a three-carbon chain. Its IUPAC name is propane-1,2,3-triol and its common name is glycerol.

NCERT (2026-27 edition):
7.2 Nomenclature

Table 7.1: Common and IUPAC Names of Some Alcohols