1.

How many of the following substituents can cause aromatic electrophilic substitution faster than benzene ? (a)-NH_2 , (b)-NR_2 , ( C)-NO_2 , (d)-overset(+)NH_3 (e)-O-oversetoverset(O)(||)C-R , (f) -NH-oversetoverset(O)(||)C-R , (g)-oversetoverset(O)(||)C-Cl , (h)-oversetoverset(O)(||)C-H (i)-SO_3H , (j)-CH_3, (k)-CH-CR_2

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Answer :6(A,B,E,F,J,K)


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