Detergents dissolved in water help in cleaning clothes by_________?
Correct answer: C. Reducing the surface tension of water
- A. Increasing the temperature of water
- B. Reacting chemically with dirt
- C. Reducing the surface tension of water
- D. Dissolving dirt
Explanation
Detergents lower water's surface tension, allowing it to spread through cloth and reach dirt more easily. They also help suspend grease, but the characteristic physical action tested here is reduced surface tension.
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