Correct order of polyfunctional groups

1.	Correct order of polyfunctional groups
Answer» `-COOH gt - COOR gt - CN gt - OH gt " Alkene " gt - SO_(3)H` `-COOH gt -SO_(3)H gt - COOR - gt CN gt - OH gt` Alkene `-COOH gt - CN gt - COOR gt - OH gt " Alkene " gt - SO_(3)H` `-COOH gt -SO_(3)H gt - COOR gt - OH gt CN gt` Alkene Solution :According to NCERT - COOH should be taken as principal FUNCTIONAL group.

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