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JEE Main levelSingle correct optionDifficulty 2 of 3pl133

When Terylene is made commercially from dimethyl terephthalate and ethylene glycol, the small molecule eliminated is

Awater
Bethanol
Cmethanol
Dhydrogen chloride

Answer: C

Transesterification replaces the

- OCH X_{3}

groups of the diester by

- OCH X_{2} CH X_{2} OH

and releases

CH X_{3} OH

for each ester group exchanged.

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