A match catches fire when struck against the rough surface of the box primarily because of
(a) inflammatory material on the rough surface
(b) frictional heat
(c) electric charge
(d) latent heat
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Answer:
2.frictional heat. because when we rougf any matrial on a fasr sleed its produce heat.
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Matchstick lights up because - (b) frictional heat.
The coating on matchstick and match box is of phosphorus. Due to friction on rubbing the both, heat is produced which with phosphorus and air produces spark.
The heat ignites potassium chlorate. It is an oxidizing agent and hence burns into flame. Friction is produced only on rough surface, not on smooth surface.
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