(a) Identify the

• Compound is bleaching powder.

• Chemical name : Calcium oxychloride

• Formula: CaOCl₂

• It is produced by the action of chlorine on dry slaked lime Ca(OH)₂.

Uses:

(i) It is used to bleach wood pulp in paper factories.

(ii) It is used as an oxidizing agent in many chemical industries.

(b) When electricity is passed through an aqueous solution of sodium chloride (called brine), it decomposes to form sodium hydroxide. This process is called chlor-alkali process.