Q. Which of the following are correctly matched?

1. Common salt- formed by sodium hydroxide and hydrochloric acid.
2. Brine- aqueous solution of sodium chloride
3. Chlor-alkali process- formation of sodium chloride

Select the correct answer from the codes given below:
Answer: Only 1 and 2
Notes: The salt formed by the combination of hydrochloric acid and sodium hydroxide solution is called sodium chloride. When electricity is passed through an aqueous solution of sodium chloride (called brine), it decomposes to form sodium hydroxide. The process is called the chlor-alkali process because of the products formed- chlor for chlorine and alkali for sodium hydroxide.