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 hydroxide, Y:- Pink

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X:- Magnesium oxide, Y:- White

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X:- Magnesium oxide, Y:- Black

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X:- Magnesium hydroxide, Y:- White

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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. The reaction involved is:

$2 Mg (s) + O_{2} (g) Δ \to 2 MgO (s)$

So, X is magnesium oxide and Y is white.

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Similar questions

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

Q. When water is added to magnesium oxide ,magnesium hydroxide is produced which is also present in lime water .So, is it correct that the magnesium hydroxide present in lime water and the magnesium hydroxide formed from magnesium oxide and water are one and the same?

A magnesium ribbon is burnt in air. A student made the following observations:

i. Magnesium ribbon undergoes oxidation reaction.
ii. Magnesium reacts with air to form magnesium oxide.
iii. Magnesium ribbon undergoes decomposition reaction.

Which of the following statements is correct?

Magnesium ribbon burns in air to produce white substance called magnesium oxide. Which type of reaction is this?

Q. Which among the following statements is incorrect for magnesium metal?

(a) It burns in oxygen with a dazzling white flame.
(b) It reacts with cold water to form magnesium oxide and evolves hydrogen gas.
(c) It reacts with hot water to form magnesium hydroxide and evolves hydrogen gas.
(d) It reacts with steam to form magnesium hydroxide and evolves hydrogen gas.

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