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Q.

The head of the matchstick does not contain:

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a

Antimony trisulphide

b

Potassium chlorate

c

White phosphorus

d

Black phosphorus 

answer is D.

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Detailed Solution

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  • The combination of chemicals in the composition of the matchstick is all except black phosphorus.
  • Safety matches have an oxidizing agent, such as potassium chlorate, that is combined with sulfur, fillers, and glass powder in the head. 
  • The matchbox sides are made up of red phosphorus, binder, and powdered glass. 
  • Black phosphorus is known to be highly flammable and can ignite spontaneously in air at room temperature. This makes it unsuitable for use in matchsticks.
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