MCQ
Oxidation state of oxygen atom in potassium superoxide is
- A$0$
- B$-1$
- ✓$-0.5$
- D$-2$
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$N{H_3} + {O_2}\xrightarrow[{Pt}]{\Delta }x + {H_2}O$
${x} + {O_2} \to y$
$y + {H_2}O{\text{(excess)}} \to {\text{x + z}}$
The incorrect option is


$A$. $\mathrm{Be} \rightarrow \mathrm{Be}^{-}$
$B$. $\mathrm{N} \rightarrow \mathrm{N}^{-}$
$C$. $\mathrm{O} \rightarrow \mathrm{O}^{2-}$
$D$. $\mathrm{Na} \rightarrow \mathrm{Na}^{-}$
$E$. $\mathrm{Al} \rightarrow \mathrm{Al}^{-}$
Choose the most appropriate answer from the options given below :
The equilibrium constant of the reaction $2N{H_3} + \frac{5}{2}{O_2} \rightleftharpoons 2NO + 3{H_2}O$ in terms of $K_1, K_2$ and $K_3$ is