Which of the following statements is INCORRECT about the use of washing soda?

Correct option is C

The correct answer is (c) It is not used in the paper industry.

Explanation:

• Washing soda (sodium carbonate, Na₂CO₃) is used in the paper industry for pulping wood and in the process of paper manufacturing.
• Sodium carbonate plays a crucial role in softening water, cleaning, and producing various sodium-based compounds.

Information Booster:

• Chemical Formula: Na₂CO₃·10H₂O (Sodium Carbonate Decahydrate)
• Common Name: Washing Soda
• Nature: It is a basic (alkaline) substance.

Uses of Washing Soda:

• Water Softening: Removes permanent hardness of water by reacting with calcium and magnesium ions.
• Cleaning Agent: Used in laundry and domestic cleaning.
• Paper Industry: Used in the pulping process to break down wood fibers.
• Glass and Soap Industry: Acts as an essential raw material in the manufacture of glass, soap, and detergents.
• Sodium Compound Production: It is used in the production of sodium compounds like borax (Na₂B₄O₇·10H₂O) and sodium silicate.