Question
Detergents ________ the surface tension of water.
The correct answer is
Reduces
The correct answer reduces.
Key Points
- Adding surfactants to water reduces its surface tension.
- Surfactants and soaps are referred to as surface-active agents or simply surfactants.
- They lower the surface tension of water and enhance its ability to wet things.
Additional Information
- A slow change or process occurs in small steps over a long period rather than suddenly.
- Compounds that reduce the surface tension of water are called surfactants, which work by separating water molecules from each other.
- The surface tension of water increases several times by incorporating common salt into it.
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Important Questions from Surface Tension
Which of the following statements is NOT correct about surface tension?
If a liquid droplet and a soap bubble are formed from the same liquid and have the same radius $R$, how does the excess pressure inside the soap bubble ($\Delta P_{bubble}$) compare to the excess pressure inside the liquid droplet ($\Delta P_{droplet}$)?
Mercury does NOT wet the glass. This is due to the property of the liquid known as
________ is a surface phenomenon.
A liquid drop is spherical in shape due to
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