WBCS.LIVE practice question

On a clean glass plate a drop of water spreads to form a thin layer whereas a drop of mercury remains almost spherical because:

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. Mercury is a metal
  2. Density of mercury is greater than that of water
  3. Cohesion of mercury is greater than its adhesion with glass
  4. Cohesion of water is greater than its adhesion with glass

Correct answer and explanation

Correct answer: Cohesion of mercury is greater than its adhesion with glass