When a burning magnesium ribbon is introduced in a gas jar containing oxygen, it will burn with :(1) a reddish flame (2) a pale blue flame (3) a golden yellow flame (4) a dazzling white flame

Correct answer: (4) a dazzling white flame

 Explanation: Magnesium has a high affinity for oxygen, therefore magnesium reacts with oxygen to form magnesium oxide. This formation of MgO imparts dazzling white flame.

The reaction is given by:

$2Mg + O_2 → 2MgO$ 

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Updated on: 10-Oct-2022

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