Question:
Dolomite refractory contains
Dolomite refractory contains
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Dolomite refractory is made from dolomite and contains both \(CaO\) and \(MgO\).
Updated On: May 7, 2026
- \(MgO\) only
- \(CaO\) only
- \(CaO\) & \(MgO\)
- \(Al_2O_3\)
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The Correct Option is C
Solution and Explanation
Concept:
Dolomite is a double carbonate of calcium and magnesium. On calcination, it gives calcium oxide and magnesium oxide.
Step 1: Dolomite has formula: \[ CaMg(CO_3)_2 \]
Step 2: On heating or calcination: \[ CaMg(CO_3)_2 \rightarrow CaO+MgO+2CO_2 \]
Step 3: Therefore, dolomite refractory contains both: \[ CaO \quad \text{and} \quad MgO \] Therefore, the correct answer is: \[ \boxed{CaO \ \& \ MgO} \]
Step 1: Dolomite has formula: \[ CaMg(CO_3)_2 \]
Step 2: On heating or calcination: \[ CaMg(CO_3)_2 \rightarrow CaO+MgO+2CO_2 \]
Step 3: Therefore, dolomite refractory contains both: \[ CaO \quad \text{and} \quad MgO \] Therefore, the correct answer is: \[ \boxed{CaO \ \& \ MgO} \]
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