MCQ
In fire extinguisher, pyrene is
- A$C{O_2}$
- ✓$CC{l_4}$
- C$C{S_2}$
- D$CHC{l_3}$
It forms highly poisonous phosgene gas
$CC{l_4} + {H_2}O \to \mathop {COC{l_2}}\limits_{{\rm{Phosgene}}} + 2HCl$
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$Z{n^{2 + }} + 2e \to Zn,{E^o} = - 0.762\,V$
$M{g^{2 + }} + 2e \to Mg,{E^o} = - 2.37\,V$
When zinc dust is added to the solution of $MgC{l_2}$
$\begin{array}{*{20}{c}}
{C{H_2} - COOH} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_2} - COOH}
\end{array}\xrightarrow{\Delta }(A)\xrightarrow{{C{H_3} - C{H_2}N{H_2}/\Delta }}(B)$
$(B)$ will be :