Sodium chloride is known as

Options

A. Table salt
B. Common salt
C. Soda ash
D. Rock salt

Answer

To answer the question "Sodium chloride is known as," we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Chemical Formula**:
Sodium chloride is represented by the chemical formula NaCl. This indicates that it is composed of sodium (Na) and chloride (Cl) ions.

2. **Common Names**:
Sodium chloride is commonly referred to as "table salt" or "common salt." These terms are widely used in everyday language.

3. **Natural Occurrence**:
Sodium chloride is found naturally in seawater and is harvested from the earth as "rock salt." This mineral form is another name for sodium chloride.

4. **Other Names**:
While sodium chloride is known as table salt and rock salt, it is important to note that "soda ash" is not a name for sodium chloride. Soda ash refers to sodium carbonate (Na2CO3), which is different from sodium chloride.

5. **Conclusion**:
Therefore, the correct names for sodium chloride are:
- Table salt
- Common salt
- Rock salt

### Final Answer:
Sodium chloride is known as table salt, common salt, and rock salt.

---