MCQ
$Me - C \equiv C - C{H_2} - COCl\xrightarrow{{{H_2}/Pd - C}}$
- ✓

- B

- C

- D






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$(A)\, F^-, Na^+, Mg^{+2}$ $(B) \,Ni, Cu, Zn$
$(C)\, N^{-3}, Cs^+, H^-$ $(D)\, Li, He, Be^{+2}$