Pick the correct statement among the following :

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Sodium lauryl sulphate forms an insoluble scum with hard water

Sodium dodecyl benzene sulphonate used in tooth paste is a cationic detergent

Non-ionic detergents is formed when polyetheylene glycol reacts with adipic acid

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

answer is C.

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Detailed Solution

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

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