Question

by rubbing matchstick with rough surface of match box then it start burning give reason​

Answer 1

When the matchstick is rubbed against the side of the match box, some of the red phosphorus is converted into white phosphorus; this immediately reacts with potassium chlorate in the matchstick head to produce enough heat to ignite antimony trisulphide and starts the combustion of matchstick.

Answer 2

Answer:

Because there is a substance called as red phosphate is present at the one end of matchstick when we rubbing the matchstick with the rough surface of match box red phosphate converted into white phosphate . when white phosphate comes in the contact of oxygen it is burnt.