Q

Which of the following is the correct set of raw materials for washing soda preparation?

RRB Group D, 25-Aug-22 S-3 2022
✓ Answer: A NaCl, NH3, CO2
The correct raw materials for washing soda preparation are NaCl, NH3, and CO2. Washing soda (sodium carbonate, Na2CO3) is produced using the Solvay process. In this process, ammonia, carbon dioxide, and sodium chloride are used to produce sodium carbonate along with by-products. The ammonia is recovered and recycled, making the Solvay process both efficient and economical.
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