Which of the following statement is true?

Options

A. Passage of solvent molecules towards high concentration solution side through semipermeable membrane is osmosis
B. Passage of solute molecules towards solution side through semipermeable membrane is osmosis.
C. The boiling point of a solution is always lower than that of pure solvent
D. The boiling point of a liquid is the temperature at which its vapour pressure becomes equal to 260 mm

Explanation

To determine which of the given statements is true, we will analyze each statement one by one.

### Step 1: Analyze the First Statement
**Statement:** Passage of solvent molecules towards high concentration solution site through semi-permeable membrane is osmosis.

**Analysis:**
Osmosis is defined as the movement of solvent molecules from a region of lower solute concentration to a region of higher solute concentration through a semi-permeable membrane. This definition aligns with the statement provided. Therefore, this statement is **true**.

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