MCQ
Finely divided iron combines with $CO $ to give
- ✓$Fe{(CO)_5}$
- B$F{e_2}{(CO)_9}$
- C$F{e_2}{(CO)_{12}}$
- D$Fe{(CO)_6}$
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$1$ litre of mixture $X$ $+$ excess $BaC{l_2} \to Z$ Number of moles of $Y$ and $Z $ are