MCQ
The oxidation states of phosphorus vary from
- ✓$-3$ to $+5$
- B$-1$ to $+1$
- C$-3$ to $+3$
- D$-5$ to $+1$
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$I.$ $H_2O_2$ $II.$ $O_2$ $III.$ $O_3$

$A_2(g) + B_2(g) \rightleftharpoons C_2(g) + D_2(g)$
If we take $1$ mole of each of the four gases in a $10$ litre container, what would be equilibrium concentration of $A_2(g)$ ?
$C{H_3}CN\xrightarrow{{Na/{C_2}{H_5}OH}}A\xrightarrow{{HN{O_2}}}B\xrightarrow{{{\text{copper}}}}C$
