MCQ
$K{O_2} + C{O_2} \to ?$ (gas)
- A${H_2}$
- B${N_2}$
- ✓${O_2}$
- D$CO$
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$(I)$ Only $C$ react with $0.10\, M\, HCl$ to give $H_2(g)$
$(II)$ When $A$ is added to solution of the other metal ions, metallic $D$ is formed but not $B$ or $C$
