Property exploited in the usage of perfumes

Options

A. compressibility of gases
B. diffusion of gases
C. expansibility of gases
D. Both (b) and (c)

Explanation

To solve the question regarding the property exploited in the usage of perfumes, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question asks what property is exploited in the usage of perfumes. We need to identify which physical property of gases is utilized when perfumes are used.

2. **Analyze the Options**:
- **Option 1: Compressibility of gases**: This refers to the ability of gases to be compressed into smaller volumes. While gases are compressible, this property is not typically used in the application of perfumes.

- **Option 2: Diffusion of gases**: Diffusion is the process by which gas molecules spread from areas of higher concentration to areas of lower concentration. This property is crucial in the context of perfumes, as it allows the fragrance to spread throughout the air when sprayed.

- **Option 3: Expansibility of gases**: This refers to the ability of gases to expand and fill the available space. While this property can contribute to the spreading of the fragrance, it is not the primary property utilized in the application of perfumes.

- **Option 4: Both B and C**: This option suggests that both diffusion and expansibility are used in the context of perfumes.

3. **Determine the Correct Answer**:
- Since the primary property that allows the fragrance of the perfume to spread in the air is the diffusion of gases, we can conclude that **Option 2** is correct. However, since expansibility also contributes to the spreading of the fragrance, **Option 4 (both B and C)** is the most comprehensive answer.

4. **Final Answer**: The property exploited in the usage of perfumes is **Option 4: Both B and C (Diffusion and Expansibility of gases)**.