When magnesium ribbon is burnt in the air it will form a compound X which is Y in colour. Identify X and Y.

X:- Magnesium oxide, Y:- Black

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X:- Magnesium oxide, Y:- White

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X:- Magnesium hydroxide, Y:- White

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X:- Magnesium hydroxide, Y:- Pink

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Solution

The correct option is B X:- Magnesium oxide, Y:- White
When magnesium ribbon is burnt in the air or in presence of oxygen, it burns with a dazzling white flame and produces magnesium oxide ( $MgO$ ) powder which is white in colour. This can be represented as:

Magnesium + Oxygen→ Magnesium oxide

So, X is magnesium oxide and Y is white.

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