The cohesive force of water is due to :

Options

A. S-bonds
B. O-bonds
C. H-bonds
D. OH-bonds

Answer

### Step-by-Step Text Solution

1. **Understanding Cohesion**:
- Cohesion refers to the attractive force between molecules of the same substance. In the context of water, it describes how water molecules are attracted to each other.

2. **Defining Cohesive Force**:
- The cohesive force is the strong force of attraction that exists between the same molecules. This means that water molecules are held together by this cohesive force.

3. **Role of Hydrogen Bonds**:
- Water molecules can form hydrogen bonds due to the presence of oxygen and hydrogen atoms. A single water molecule can form up to four hydrogen bonds with neighboring water molecules.

4. **Impact of Cohesion**:
- The cohesive forces among water molecules allow them to resist separation. This is particularly important in phenomena such as surface tension, where water molecules at the surface are pulled inward by cohesive forces.

5. **Conclusion**:
- The cohesive force of water is primarily due to hydrogen bonds. These bonds are responsible for the strong attraction between water molecules, leading to various properties of water, including surface tension.

### Final Answer
The cohesive force of water is due to **hydrogen bonds**.

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