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प्रश्न
Select from the following a statement which is not true about burning of magnesium ribbon in air:
पर्याय
It burns with a dazzling white flame.
A white powder is formed on burning.
It is an endothermic reaction.
It is an example of a combination reaction.
MCQ
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उत्तर
It is an endothermic reaction.
Explanation:
Magnesium burns in air with a dazzling white flame, forming magnesium oxide (MgO), while releasing significant heat energy
\[\ce{2Mg_{(S)} + O2_{(g)} -> 2MgO_{(s)} + Heat energy}\]
A white powder (MgO) is created is true. The reaction is exothermic, not endothermic, as it releases heat. Magnesium interacts with oxygen to produce a single product (MgO).
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