O.P. of pure water is -

Options

A. 0
B. 1
C. 10
D. 100

Answer

To determine the osmotic pressure (OP) of pure water, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Osmotic Pressure (OP)**:
- Osmotic pressure is the pressure required to prevent the flow of water across a semipermeable membrane due to osmosis. It is directly related to the concentration of solutes in a solution.

2. **Identifying the Solute Concentration in Pure Water**:
- Pure water, often referred to as distilled water, contains no solutes. This means that the solute concentration in pure water is zero.

3. **Applying the Relationship Between OP and Solute Concentration**:
- Since osmotic pressure is directly proportional to solute concentration, if the solute concentration is zero, the osmotic pressure will also be zero.

4. **Conclusion**:
- Therefore, the osmotic pressure (OP) of pure water is 0.

5. **Verifying with Options**:
- The options provided are:
- a) 0
- b) 1
- c) 10
- d) 100
- The correct answer is option (a) 0.

### Final Answer:
The osmotic pressure (OP) of pure water is **0**.

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