Select the incorrect statement(s).
I. Rapid formation and breaking of bubbles in the bulk of a liquid being heated is called evaporation.
II. The spreading out and mixing of a substance with another substance due to motion of its particles is called diffusion.
III. Petrol evaporates faster than water because interparticle forces are stronger in water.
IV. Ice-cream feels colder than ice cold water because of latent heat of fusion.

Options

A. `I` and `IV` only
B. `I` only
C. `II, III` and `IV` only
D. `III` and `IV` only

Explanation

To solve the question, we need to analyze each of the four statements provided and identify which ones are incorrect.

### Step-by-Step Solution:

1. **Analyze Statement I:**
- Statement I claims that "Rapid formation and breaking of bubbles in the bulk of a liquid being heated is called evaporation."
- **Explanation:** This statement is incorrect because the rapid formation and breaking of bubbles in a liquid occurs during boiling, not evaporation. Evaporation is a surface phenomenon where molecules at the surface of a liquid escape into the gas phase, while boiling involves the entire bulk of the liquid reaching a certain temperature (boiling point) and forming bubbles.

2. **Analyze Statement II:**
- Statement II states that "The spreading out and mixing of a substance with another substance due to motion of its particles is called diffusion."
- **Explanation:** This statement is correct. Diffusion is indeed the process where particles spread out and mix due to their random motion. An example is the scent of a perfume spreading in the air.

3. **Analyze Statement III:**
- Statement III asserts that "Petrol evaporates faster than water because interparticle forces are stronger in water."
- **Explanation:** This statement is also correct. Water has stronger intermolecular forces (hydrogen bonds) compared to petrol, which allows petrol to evaporate faster as its particles can escape into the vapor phase more easily.

4. **Analyze Statement IV:**
- Statement IV claims that "Ice cream feels colder than ice cold water because of latent heat of fusion."
- **Explanation:** This statement is correct. When ice cream melts, it absorbs heat from the surroundings (including from your mouth), which is the latent heat of fusion. This heat absorption makes ice cream feel colder than ice cold water.

### Conclusion:
- The only incorrect statement is **Statement I**.

### Final Answer:
The incorrect statement is: **I.**

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