Question

Water rise in capillary tubes because of
i Attraction of water molecules to each other
ii Presence of a weak electrostatic force
iii Cohesive force

• A. I, II
  
• B. II, III
  
• C. I, III
  
• D. All of the above

Answer 1

The correct option is D All of the above

Cohesive force is the one in which water and the walls of the tube are attracted to each other.

Attraction of water molecules towards each other and presence of weak electoratic force is collectively known as adhesive force as the electrostatic charges help attract two water molecules towards each other.

All these forces help water to rise in a capillary.

So the correct answer is 'All of the above'.