What do you get when magnesium ribbon is burnt in air?
A
Water
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B
Magnesium oxide
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C
Magnesium hydroxide
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D
Oxygen
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Solution
The correct option is B Magnesium oxide When magnesium ribbon is burnt in air, magnesium reacts with the oxygen present in the air to form magnesium oxide. The reaction occurs as follows: 2Mg+O2→2MgO