In chlor-alkali process, chlor represents chlorine gas and alkali represents:

Correct option is A

Correct Answer: (A) NaOH

Explanation:
In the chlor-alkali process, chlorine gas (Cl₂) is produced along with sodium hydroxide (NaOH) and hydrogen gas (H₂) through the electrolysis of brine (concentrated sodium chloride solution). The term "alkali" in this process refers to the production of sodium hydroxide, a strong alkali.

The overall reaction in the chlor-alkali process is:

2NaCl+2H2O→Cl2+2NaOH+H22\text{NaCl} + 2\text{H}_2\text{O} \rightarrow \text{Cl}_2 + 2\text{NaOH} + \text{H}_22NaCl+2H2​O→Cl2​+2NaOH+H2​

Information Booster:

• Chlorine Gas (Cl₂): Used in disinfectants, PVC production, and bleaching agents.
• Sodium Hydroxide (NaOH): Used in soap-making, paper production, and as a cleaning agent.
• Hydrogen Gas (H₂): Used as a fuel and in the production of ammonia.

Incorrect Options:

• Option B (CaCO₃): Calcium carbonate is not involved in the chlor-alkali process.
• Option C (Ca(OH)₂): Calcium hydroxide is also not produced in this process.
• Option D (ZnO): Zinc oxide is unrelated to the chlor-alkali process.

This explanation confirms that the correct answer is NaOH (Option A).