A) \[-CN,~-N{{H}_{2}},\,-OH\]
B) \[-CHO,\,-OC{{H}_{3}},-S{{O}_{3}}H\]
C) \[-N{{O}_{2}},\,-CHO,\,-S{{O}_{3}}H\]
D) \[-Cl,~-C{{H}_{3}},\,-NHCOC{{H}_{3}}\]
Correct Answer: C
Solution :
\[-N{{O}_{2}},-CHO\]and\[-S{{O}_{3}}H\]functional groups are deactivating and m-directing group.
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