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30/10/2020 4:54 pm
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When a magnesium ribbon is burnt in air, the ash formed is
(a) black
(b) white
(c) yellow
(d) pink
1 Answer
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30/10/2020 4:55 pm
(b) When a Mg ribbon is burnt in air, the ash formed is of magnesium oxide which is white in colour.
2Mg + O2(g) → 2MgO