Question:
Dead burning of Magnesite is done at a temperature of
Dead burning of Magnesite is done at a temperature of
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Dead burning makes magnesite dense and stable by heating it at very high temperature, around \(1925^\circ C\).
Updated On: May 7, 2026
- \(1525^\circ C\)
- \(1100^\circ C\)
- \(1700^\circ C\)
- \(1925^\circ C\)
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The Correct Option is D
Solution and Explanation
Magnesite is magnesium carbonate:
\[
MgCO_3.
\]
When magnesite is heated, it decomposes to form magnesium oxide:
\[
MgO.
\]
The reaction is:
\[
MgCO_3 \rightarrow MgO+CO_2.
\]
Dead burning means heating at very high temperature so that the material becomes dense, stable, and less reactive.
Dead burnt magnesite is used for making basic refractories.
For dead burning, magnesite is heated to a very high temperature.
Among the given options, the correct dead burning temperature is:
\[
1925^\circ C.
\]
At this temperature, magnesia becomes highly refractory and suitable for refractory applications.
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