Question:
Select from the following a statement which is not true about the burning of magnesium ribbon in air:
Select from the following a statement which is not true about the burning of magnesium ribbon in air:
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The burning of magnesium in air is a combination reaction (Mg + Osubscript{2} → MgO) and it releases heat, making it exothermic.
Updated On: Feb 6, 2026
- 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.
{5pt}
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The Correct Option is C
Solution and Explanation
Step 1: Understanding the burning of magnesium ribbon.
- When magnesium ribbon burns in air, it produces a dazzling white flame and forms a white powder of magnesium oxide (MgO), which is an exothermic reaction.
- The reaction between magnesium and oxygen is a combination reaction where two reactants combine to form a product.
Step 2: Conclusion. The burning of magnesium is an exothermic reaction, not endothermic.
Therefore, statement (C) is incorrect.
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