Succinic acid is common name of

The correct answer is Option (2) → Butanedioic acid

Many carboxylic acids are known by common names that come from their natural source. In the IUPAC name of a dicarboxylic acid, the chain is counted including both –COOH carbons and the suffix is -dioic acid. Succinic acid, \( \ce{HOOC-(CH2)2-COOH} \), has a four-carbon chain (Table 8.3 below).

So succinic acid is the common name of butanedioic acid.

NCERT (2026-27 edition):
Nomenclature – …