Question

magnesium ribbon is cleaned before burning why
choose the correct answer
(a)it absorbs moisture from atmosphere which interferes with burning
(b)its outer layer from oxides which interfere with burning
(c) dust from atmosphere prevent its burning
(d) all of the above
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Answer 1

Answer:

D is the correct answer

Answer 2

Option © dust from atmosphere prevent its burning

Explanation :-

• Magnesium is a very reactive metal. So, when it is stored, it reacts with oxygen in the presence of air to form a layer of magnesium oxide on its surface. This layer of magnesium oxide is quite stable and prevents further reaction of magnesium with oxygen. Therefor, magnesium ribbon is cleaned in order to remove the layer of magnesium oxide so that it can burn in air.