Question

Force of cohesion develops due to

• A. Attraction between similar molecules.
• B. Attraction between different molecules.
• C. Surface tension at the interface.
• D. All the above.

Answer 1

The correct option is A Attraction between similar molecules.

Cohesion force is the strong force of attraction which exist between the same molecules. Cohesive force of water is due to the hydrogen bond between the water molecules. It allows the liquid molecules to resist separation. Cohesion holds hydrogen bonds together to create surface tension on water. The electronegative oxygen forms hydrogen bond with the Hydrogen atom.

So, the correct answer is option A.