Discussion
One of the ingredients of the paste on the side of a match box is
Answer: C
The side of the box carries phosphorus trisulphide, along with red phosphorus and powdered glass.
The match head holds an oxidising agent, potassium chlorate, with antimony trisulphide and sulphur. Friction converts a trace of the red phosphorus to white phosphorus, which ignites and sets off the head.
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