Why magnesium ribbon should be cleaned before burning it in air?

1.	Why magnesium ribbon should be cleaned before burning it in air?
Answer» This is done to remove the protective layer of magnesium oxide from the surface of magnesium ribbon so that it may readily combine with the oxygen of air on heating. Meena Pradhan superb?????? Magnesium ribbon is cleaned before burning to remove the protective layer of basic magnesium carbonate from the surface of magnesium ribbon

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