Which one among the following is the major constituent of soda lime glass ?

Options

A. Sodium oxide
B. Calcium oxide
C. Calcium carbonate
D. Silica

Explanation

To determine the major constituent of soda lime glass, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Soda Lime Glass**: Soda lime glass is a type of glass that is primarily made from silica (SiO2), soda (sodium carbonate, Na2CO3), and lime (calcium carbonate, CaCO3). It is one of the most common types of glass used in windows, bottles, and jars.

2. **Identifying the Constituents**: The main constituents of soda lime glass include:
- Silica (SiO2) - approximately 70%
- Soda (Na2CO3) - approximately 13%
- Lime (CaCO3) - approximately 10%
- Other minor constituents like dolomite, feldspar, and potash.

3. **Analyzing the Percentages**: From the percentages mentioned, we can see that silica (SiO2) is the most abundant component, making up about 70% of the glass composition.

4. **Conclusion**: Based on the analysis, the major constituent of soda lime glass is silica (SiO2).

### Final Answer:
The major constituent of soda lime glass is **silica (SiO2)**.

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