1.

In fire extinguisher, pyrene is

Answer»

`CO_(2)`
`C Cl_(4)` is non-inflammable
`CS_(2)`
`CHCl_(3)`

Solution :`C Cl_(4)` is STABLE to red HEAT. Its vapours are highly non-inflammable i.e., do not catch fire. It is because of this property a fire extinguisher is RESTRICTED because with water vapours, it forms highly poisonous phosgene gas.
`C Cl_(4)+H_(2)O to underset("Phosgene")(COCl_(2))+2HCl`


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