Question:

Which of the following cleansing agents contains cationic detergent?

Show Hint

Cationic detergents are used in hair conditioners.
Updated On: Oct 1, 2026
  • Hair conditioner
  • Liquid detergent
  • Household detergent
  • Toothpaste
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The Correct Option is A

Solution and Explanation

Step 1: Understanding the Concept:
Cationic detergents have a positively charged head, usually a quaternary ammonium group, and a long hydrocarbon tail. They are mostly used as germicides and conditioners.

Step 2: Apply:
Hair conditioners contain cationic detergents such as cetyltrimethylammonium chloride. The positive head sticks to negatively charged hair and makes it smooth. Liquid detergent and household detergent use anionic ones (like sodium alkylbenzene sulphonate). Toothpaste uses mild anionic foaming agents such as sodium lauryl sulphate.

Step 3: Conclusion:
Option (A).

Final Answer:
Hair conditioner uses cationic detergent. \[ \boxed{A:\ \text{Hair conditioner}} \]
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