The order of decreasing priority for some functional group is-COOH>…A…>-COOR(R= alkyl group )>-COCl>-CONH2>-CN>-HC=O>C=O>…B…Here, A and B respectively refer to

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-OH,SO3H

SO3H,-OH

X,OR

NH2,-OH

answer is B.

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Detailed Solution

A=-SO3H,B=-OHThe order of decreasing priority for some functional groups is : -COOH,-SO3H,-COOR(R= alkyl group ) -COCl,-CONH2,-CN,-HC=O,>C=O,-OH, -NH2,>C=C<,-C≡C-

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