Why does the matchstick start burning on rubbing it on the side of the matchbox?
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becauseWhen you rub the head of the matchstick on the striking surface of the matchbox, some heat is generated due to the friction. This heat breaks a small part of the red phosphorus chain. After that some red phosphorus transforms into white phosphorus. ... Hence a matchstick burns on rubbing it on the side of the matchbox.
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A number of the form p.q or a number which can be expressed in the form p.q is called a rational numbers.
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