A salt is obtained using common salt as a raw materal it is used glass , soop and paper industries and also used in the manufacture of sodium compounds such as borax. Identify the salt .

Options

A. Caustic soda
B. Bleaching powder
C. Baking soda
D. Washing soda

Explanation

To identify the salt obtained using common salt (sodium chloride, NaCl) as a raw material, which is used in various industries and in the manufacture of sodium compounds, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Raw Material**:
- The question states that the salt is obtained using common salt as a raw material. Common salt is chemically known as sodium chloride (NaCl).

2. **Consider the Uses of the Salt**:
- The salt is mentioned to be used in the glass, soap, and paper industries. This gives us a clue about its applications.

3. **Identify the Salt**:
- The salt we are looking for is likely to be sodium carbonate, commonly known as washing soda. Its chemical formula is Na2CO3.10H2O (which includes water of crystallization).

4. **Relate to Other Sodium Compounds**:
- The salt is also used in the manufacture of sodium compounds such as borax. Sodium carbonate is indeed used in the production of borax (sodium borate).

5. **Conclusion**:
- Based on the information provided, the salt that fits all these criteria is washing soda (sodium carbonate).

### Final Answer:
The salt is **Washing Soda (Sodium Carbonate, Na2CO3.10H2O)**.

---