Multiple choice

Which of the following principles is related to cleaning action of soap?

  1. Surface tension

  2. Bernoulli's principle

  3. Capillary action

  4. Gravitational force
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Soap molecules reduce the surface tension of water, allowing it to penetrate fabrics and lift dirt more effectively. This reduction in surface tension is the fundamental principle behind the cleaning action of surfactants.

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