Cleaning action of soap is due to:
Correct answer: D. Polarity of water
- A. Decrease in surface tension of water
- B. Viscosity of water
- C. High boiling point of water
- D. Polarity of water
Explanation
Polarity of water: Soap molecules have polar and nonpolar regions, allowing them to interact with both water and oily substances, facilitating the removal of dirt and oils. Therefore, the correct option for the cleaning action of soap is "Polarity of water."
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About Properties of Liquids
Liquid behavior depends on intermolecular forces, which produce surface tension, viscosity, capillary action and a definite volume without a fixed shape. The topic also covers vapor pressure, evaporation, boiling point and the effect of temperature and external pressure, while distinguishing evaporation at the surface from boiling throughout the liquid.
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