1.

Which of the following is dextron ,

Answer»

`[-CH_2-overset(O)overset(||)C-]_n`
`[-O -UNDERSET(CH_3)underset(|)CH-COO-CH_2-CO-]_n`
`[-overset(O)overset(||)C-NH-(CH_2)_5-]_n`
`[CH_2-overset(Cl)overset(|) CH-]_n`

ANSWER :B


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