Statement- Reverse osmosis is used to purify saline water.
Explanation- Solvent molecules pass from concentrate solution to dilute solution through semipermeable membrane if high pressure is applied on solution side.

Options

A. If both the statements are TURE and STATEMENT-2 is the correct explanation STATEMENT-1
B. If both the statements are TURE but STATEMENT-2 is NOT the correct explanation STATEMENT-1
C. If STATEMENT-1 is TURE and STATEMENT-2 is FALSE
D. If STATEMENT-1 is FA,SE and STATEMENT-2 is TRUE

Answer

To solve the question regarding reverse osmosis and its use in purifying saline water, we will break down the concepts step by step.

### Step 1: Understand the Statement
The statement given is: "Reverse osmosis is used to purify saline water."

**Explanation:**
Reverse osmosis (RO) is indeed a widely used method for purifying saline (salty) water, making it suitable for drinking and other uses. This method is effective in removing dissolved salts and impurities from water.

**Hint:** Consider the applications of reverse osmosis in water treatment processes.

### Step 2: Analyze the Explanation
The explanation states: "Solvent molecules pass from concentrated solution to dilute solution through a semipermeable membrane if high pressure is applied on the solution side."

**Explanation:**
In a typical osmosis process, solvent molecules move from a region of lower solute concentration (dilute solution) to a region of higher solute concentration (concentrated solution) through a semipermeable membrane. However, in reverse osmosis, high pressure is applied to the concentrated side, forcing the solvent molecules to move in the opposite direction—from the concentrated solution to the dilute solution.

**Hint:** Think about the role of pressure in altering the natural flow of solvent molecules in osmosis.

### Step 3: Visualize the Process
Imagine two compartments separated by a semipermeable membrane:
- **Compartment A:** Contains saline water (high concentration of solute).
- **Compartment B:** Contains pure water (low concentration of solute).

Under normal osmosis, water would move from B to A. However, when high pressure is applied to A, water is forced to move from A to B, effectively purifying the water.

**Hint:** Visual aids can help in understanding the movement of molecules across the membrane.

### Step 4: Conclusion
Both the statement and the explanation are correct. Reverse osmosis is indeed used for purifying saline water, and the explanation accurately describes the process of how solvent molecules move under high pressure through a semipermeable membrane.

**Final Answer:** Both the statement and explanation are correct, and the explanation correctly describes the phenomenon of reverse osmosis.

**Hint:** Always cross-reference statements with scientific principles to validate their accuracy.