1.

Why magnesium ribbon are clean by sandpaper

Answer» To clean the dust and white layer on it
Because magnesium is reactive metal which react to metal we cleaned due to another reaction will not happen
in order to remove white layer of magnesium oxide from its surface which hinders the burning of magnesium
To remove the protecting layer of magnesium carbonate from the surface of magnesium ribbon so that it may readily combine with the oxygen of air.
Magnesium ribbon should be cleaned buy Sandpaper to remove the layer of oxygen present on the magnesium
We cleaned by Sandpaper
Because magnesium ribbon is a reactive metal which react with oxygen so way cleaned by sand paper and


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