
- A

- ✓

- C

- D








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Reason : The reaction between nitrogen and oxygen requires high temperature.

$(I)$ Number of $S-S$ bonds in $H_2S_nO_6$ are $(n + 1)$
$(II)$ When $F_2$ reacts with water gives $HF, O_2$ and $O_3$
$(III)$ $LiNO_3$ and $BaCl_2$ compounds are used in fire works
$(IV)$ $Be$ and $Mg$ hydrides are ionic and polymeric
Identify $B$ in the reaction

$\begin{array}{*{20}{c}}
{Ph - C{H_2} - CH - C{H_3}} \\
{\,\,\,\,\,\,\,\,\,\,\,\,|\,\,\,\,} \\
{\,\,\,\,\,\,\,\,\,\,\,\,\,OH\,}
\end{array}$ $>$ $\begin{array}{*{20}{c}}
{Me - C{H_2} - CH - C{H_3}} \\
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,|\,\,\,\,} \\
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,OH\,}
\end{array}$