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JEE Main levelSingle correct optionDifficulty 2 of 3pl132

The acid components of Terylene and of glyptal are, respectively

Ahexanedioic acid and benzene-1,4-dicarboxylic acid
Bbenzene-1,4-dicarboxylic acid and benzene-1,2-dicarboxylic acid
Cbenzene-1,2-dicarboxylic acid and benzene-1,4-dicarboxylic acid
Dbenzene-1,3-dicarboxylic acid and benzene-1,2-dicarboxylic acid

Answer: B

Terylene uses terephthalic acid (1,4-isomer); glyptal uses phthalic acid (1,2-isomer). Both are esterified with ethylene glycol.

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