Question

Before burning in air, the magnesium ribbon is cleaned by rubbing with a sand paper to:
a). Remove the layer of magnesium oxide from the ribbon surface
b). Remove the layer of magnesium carbonate from the ribbon surface​

Answer 1

Magnesium very reactive element which rapidly reacts with oxygen in the air to form a white layer of magnesium oxide and this layer will not burn.

option a

Answer 2

option a

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