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Which dicarboxylic acid in presence of a dehydrating agent is least reactive to give an anhydride?

1. CH 2 CH 2 CH 2 CH 2 COOH COOH
2. COOH COOH
3. O CH 2 CH 2 C OH C OH O
4. CO 2 H CO 2 H CAREER POINT CAREER POINT , CP Tower, IPIA, Road No.1, Kota (Raj.), : 0744-6630500 | www.ecareerpoint.com Email: info@cpil.in Page # 7 JEE Main Online

Correct answer: CH 2 CH 2 CH 2 CH 2 COOH COOH

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