Question

Magnesium ribbon ko vayu mein jalane se pahle saaf kyon Kiya jata hai

Answer 1

Answer:

Before burning in air, the magnesium ribbion is cleaned by rubbing with a sand paper. This is done to to remove the protective layer of magnesium oxide from the surface of the magnesium ribbion so that it may readily combine with the oxygen of air and very bright white light given out during the burning of magnesium ribbion.