Question:

The fire extinguisher 'pyrene' contains

Updated On: Jul 29, 2022
  • Carbon dioxide
  • Carbon disulphide
  • Carbon tetrachloride
  • Chloroform
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The Correct Option is C

Solution and Explanation

Carbon tertrachloride is commonly used liquid in fire extinguishers to control fire. When heated to decomposition, it emits fumes of toxic phosgene and of hydrogen chloride.
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Notes on allotropes of carbon

Concepts Used:

Allotropes of Carbon

The existence of a chemical element in one or more physical forms happening in the same physical state is called Allotropes or allotropy. Allotropes may show different physical or chemical states turning on the atom arrangement or the number of existent atoms. While carbon and sulfur is the common element presenting allotropy. Carbon can make further allotropes due to its five-membered valency.

Read More: Allotropes of Carbon

Allotropes of Carbon:

Carbon is part of a p-block element. 

  • The atomic number of carbon = 6 
  • It belongs to group 14.
  • It makes up about 18.5% of the human body by mass.

Carbon has only two types of allotropes, such as;

  1. Crystalline
  2. Amorphous

The crystalline form of carbon consists of allotropes like;

  • Diamond
  • Graphite
  • Fullerenes

The amorphous form of carbon consists of allotropes like;

  • Coal
  • Coke
  • Wood charcoal
  • Animal charcoal
  • Lampblack
  • Gas carbon