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The compound R is

1. CO 2 H
2. H O 2 C
3. CO 2 H
4. 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 # 28 Paper-1

Correct answer: CO 2 H

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