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Why does water on a clean glass surface tend to spread out while mercury on the same surface tends to form drops, also known as wetting behavior?

Options

  1. ABecause water molecules have stronger cohesive forces than adhesive forces with the glass surface.
  2. BDue to the higher density of mercury compared to water.
  3. CIt is a result of the temperature difference between water and mercury.
  4. DBoth water and mercury have similar adhesive forces with the glass surface.

Correct answer

A. Because water molecules have stronger cohesive forces than adhesive forces with the glass surface.

Step-by-step solution

Correct Option is : (A) Because water molecules have stronger cohesive forces than adhesive forces with the glass surface.

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