A) of its covalent bond
B) of its low boiling point
C) of its high melting point
D) it gives incombustible vapours
E) None of the above
Correct Answer: D
Solution :
\[CC{{l}_{4}}\]is used as a fire extinguisher under the name pyrene. The dense vapours form protective layer on the burning objects an prevent the oxygen to come in contact with burning object.
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