Choose the incorrect statement in the following :

Options

A. Surface tension is the force acting per unit length perpendicular to the line drawn on the surface of the liquid
B. Surface tension of a liquid increases with increase in temperature
C. The SI unit of surface tension in J `m^(-2)`
D. Viscosity is a measure of resistance for the flow of liquid

Explanation

To solve the question of identifying the incorrect statement regarding surface tension and viscosity, let's break down the statements one by one.

### Step-by-Step Solution:

1. **Statement 1: Surface tension is the force acting per unit length perpendicular to the line drawn on the surface of the liquid.**
- This statement is **true**. Surface tension is indeed defined as the force acting along the surface of a liquid, perpendicular to a line drawn on that surface. It is a measure of the cohesive forces acting at the surface of the liquid.

2. **Statement 2: The surface tension of the liquid increases with the increase in temperature.**
- This statement is **false**. Generally, the surface tension of a liquid decreases with an increase in temperature. As temperature rises, the kinetic energy of the molecules increases, which reduces the intermolecular forces and thus decreases surface tension.

3. **Statement 3: Viscosity is measured as the resistance of the flow of the liquid.**
- This statement is **true**. Viscosity is a measure of a fluid's resistance to flow. It describes how thick or thin a liquid is, which directly relates to how easily it can flow.

4. **Conclusion:**
- The incorrect statement among the given options is **Statement 2**: "The surface tension of the liquid increases with the increase in temperature."

### Final Answer:
The incorrect statement is: **The surface tension of the liquid increases with the increase in temperature.**

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