Question:
Which raw material is the most important mineral for supplying \(CaO\) in glass production?
Which raw material is the most important mineral for supplying \(CaO\) in glass production?
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Limestone \((CaCO_3)\) is used in glass batches to supply \(CaO\).
Updated On: May 7, 2026
- Soda ash
- Sand
- Pearl ash
- Lime stone
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The Correct Option is D
Solution and Explanation
Concept:
In glass production, different raw materials supply different oxides. Limestone is mainly used to supply calcium oxide.
Step 1: Limestone is calcium carbonate: \[ CaCO_3 \]
Step 2: During heating, limestone decomposes: \[ CaCO_3 \rightarrow CaO+CO_2 \]
Step 3: The \(CaO\) produced acts as a stabilizer in soda-lime glass.
Step 4: Soda ash supplies \(Na_2O\), sand supplies \(SiO_2\), and pearl ash supplies \(K_2O\). Therefore, the most important raw material for supplying \(CaO\) is: \[ \boxed{\text{Lime stone}} \]
Step 1: Limestone is calcium carbonate: \[ CaCO_3 \]
Step 2: During heating, limestone decomposes: \[ CaCO_3 \rightarrow CaO+CO_2 \]
Step 3: The \(CaO\) produced acts as a stabilizer in soda-lime glass.
Step 4: Soda ash supplies \(Na_2O\), sand supplies \(SiO_2\), and pearl ash supplies \(K_2O\). Therefore, the most important raw material for supplying \(CaO\) is: \[ \boxed{\text{Lime stone}} \]
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