MCQ
In the given selective hydrogenation which combination is incorrect ?
- ✓

- B

- C

- D







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$(i)$ $C{H_3}\mathop {\mathop C\limits_{||} }\limits_O - {O^ - }$ $(ii)$ $C{H_3}{O^ - }$
$(iii)$ $C{N^ - }$ $(iv)$ $Image$
is

The substance $'B'$ is
