In fire extinguisher, pyrene is - Vidyadip

MCQ

In fire extinguisher, pyrene is

A
$C{O_2}$
✓
$CC{l_4}$
C
$C{S_2}$
D
$CHC{l_3}$

✓

Answer

Correct option: B.

$CC{l_4}$

b
(b) $CC{l_4}$ is stable to red heat. Its vapours are highly non-inflammable i.e. do not catch fire. It is because of this property $CC{l_4}$ is used as a fire extinguisher. But now a days its use as a fire extinguisher is restricted because with water vaporous.

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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