Q. One of the ingredients of the paste on the side of a match box is

A
Phosphorus pentoxide
B
Phosphorus trichloride
C
Phosphorus trisulphide
D
Phosphorus trioxide
Solution:
  • Two are of commercial significance, phosphorus pentasulfide (P4S10), which is made on a kiloton scale for the production of other organosulfur compounds, and phosphorus sesquisulfide (P4S3), used in the production of “strike anywhere matches”.

  • PHOSPHORUS TRISULFIDE is a reducing agent. Produce acidic and corrosive phosphorus pentaoxide and sulfur dioxide when burned. Produces phosphoric acid and hydrogen sulfide, a toxic flammable gas with water.

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