Question 12
Structure of Matter and Kinetic TheoryCounting of currency notes with moist fingers is based on the principles of
- A.diffusion.
- B.cohesion.
- C.adhesion.
- D.viscosity.
Show the answer and explanation
Answer: C (adhesion.)
Explanation
Water on the fingers clings to both the skin and the paper (attraction between unlike molecules), which is adhesion, so the notes are gripped better.