Question

Which of the following statements is incorrect about soaps and detergents?

• A. Synthetic detergents can be used in hard water.
• B. Soaps produce lather easily with hard water.
• C. Soaps are sodium or potassium salt of higher fatty acids.
• D. Soaps are prepared from natural oils and fats.

Answer 1

The correct option is B

Soaps produce lather easily with hard water.

In hard water, certain ions like Ca²⁺ and Mg²⁺ are present which react with soap to form a curdy white precipitate of calcium and magnesium salts. Thus, they prevent lather formation of soap. Hence, people use detergents in place of soap.