Question

Pick the correct statement among the following:

• A. Sodium lauryl sulphate forms an insoluble scum with hard water
• B. Non-ionic detergents is formed when polyethylene glycol reacts with adipic acid
• C. Sodium dodecyl benzene sulphonate used in tooth paste is a cationic detergent.
• D. Cetyl trimethyl ammonium bromide is a popular cationic detergent used in air conditioner

Answer 1

Answer: (D)

Cetyl trimethyl ammonium bromide is a popular cationic detergent used in air conditioner

Answer 2

(A) Sodium lauryl sulphate does not forms an insoluble scum with hard water. Builders present in detergent form soluble calcium and magnesium salts. (B) Sodium dodecyl benzene sulphonate used in tooth paste is a anionic detergent. (C) Cetyl-trimethyl ammonium bromide is a popular cationic detergent used in hair conditioner. It is alkyl ammonium salt. (D) Non-ionic detergents is formed when polyethylene glycol reacts with steric acid.