Read the following statements . The correct symbols filling the blanks A and B are
Osmotic pressure of a concentrated solution .............A..........osmotic pressure of a dilute solution . Diffusion pressure deficit of a concentrated solution ..........B...... diffusion pressure deficit of a dilute solution

Options

A. `(A) : gtand (B) : lt`
B. `(A) : ltand (B) : gt`
C. `(A) : ltand (B) : lt`
D. `(A) : gtand (B) : gt`

Answer

To solve the question, we need to analyze the statements regarding osmotic pressure and diffusion pressure deficit (DPD) in concentrated and dilute solutions.

1. **Understanding Osmotic Pressure**:
- Osmotic pressure is the pressure required to prevent the flow of water into a solution through a semipermeable membrane.
- In general, a concentrated solution has a higher osmotic pressure compared to a dilute solution because it contains more solute particles.

**Conclusion for A**:
- The osmotic pressure of a concentrated solution is greater than that of a dilute solution. Therefore, we fill in the blank A with the symbol ">".

**Statement**: Osmotic pressure of a concentrated solution **>** osmotic pressure of a dilute solution.

2. **Understanding Diffusion Pressure Deficit (DPD)**:
- Diffusion pressure deficit is defined as the difference between the diffusion pressure of pure water and that of the solution.
- As the concentration of solute increases in a solution, the diffusion pressure deficit decreases because the presence of solute reduces the potential for water to diffuse.

**Conclusion for B**:
- The diffusion pressure deficit of a concentrated solution is less than that of a dilute solution. Therefore, we fill in the blank B with the symbol "<".

**Statement**: Diffusion pressure deficit of a concentrated solution **<** diffusion pressure deficit of a dilute solution.

**Final Answer**:
- A: >
- B: <