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 in concentrated and dilute solutions.

### Step-by-Step Solution:

1. **Understanding Osmotic Pressure**:
- Osmotic pressure is the pressure required to stop the flow of water across a semipermeable membrane due to osmosis.
- In osmosis, water moves from an area of lower solute concentration (dilute solution) to an area of higher solute concentration (concentrated solution).
- Therefore, a concentrated solution will have a higher osmotic pressure compared to a dilute solution.

**Conclusion for A**: The osmotic pressure of a concentrated solution is **greater than** the osmotic pressure of a dilute solution. Thus, A = "greater than" (>)

2. **Understanding Diffusion Pressure Deficit**:
- Diffusion pressure deficit (DPD) is the difference between the diffusion pressure of pure water and the diffusion pressure of a solution.
- A concentrated solution has a lower tendency for water to diffuse into it compared to a dilute solution because it already has a higher concentration of solutes.
- Therefore, the diffusion pressure deficit of a concentrated solution is **less than** that of a dilute solution.

**Conclusion for B**: The diffusion pressure deficit of a concentrated solution is **less than** the diffusion pressure deficit of a dilute solution. Thus, B = "less than" (<)

### Final Answer:
- A = "greater than" (>)
- B = "less than" (<)