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If we open a bottle of perfume, its smel...

If we open a bottle of perfume, its smell spreads in the entire room with in a short time due to the process of

A

evaporation

B

sublimation

C

diffusion

D

decantation

Text Solution

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The correct Answer is:
**Step-by-Step Text Solution:** 1. **Understanding the Scenario**: When a bottle of perfume is opened, the fragrance begins to spread throughout the room. This observation prompts us to identify the process responsible for this phenomenon. 2. **Identifying the Process**: The spreading of the perfume's smell can be attributed to a specific physical process. This process involves the movement of particles from an area of higher concentration to an area of lower concentration. 3. **Defining Diffusion**: The process by which the perfume's scent spreads is known as diffusion. Diffusion is defined as the movement of particles from a region where they are in higher concentration to a region where they are in lower concentration until they are evenly distributed. 4. **Explaining the Mechanism**: When the perfume bottle is opened, the concentration of perfume molecules in the air immediately around the bottle is very high compared to the concentration of perfume molecules in the rest of the room. This difference in concentration causes the perfume molecules to move into the surrounding air, where their concentration is lower. 5. **Considering the Medium**: It is important to note that diffusion occurs most readily in gases due to the large amount of space between gas particles, allowing them to move freely and spread out quickly. 6. **Conclusion**: Therefore, the correct answer to the question is that the smell of the perfume spreads throughout the room due to the process of diffusion.
**Step-by-Step Text Solution:** 1. **Understanding the Scenario**: When a bottle of perfume is opened, the fragrance begins to spread throughout the room. This observation prompts us to identify the process responsible for this phenomenon. 2. **Identifying the Process**: The spreading of the perfume's smell can be attributed to a specific physical process. This process involves the movement of particles from an area of higher concentration to an area of lower concentration. 3. **Defining Diffusion**: The process by which the perfume's scent spreads is known as diffusion. Diffusion is defined as the movement of particles from a region where they are in higher concentration to a region where they are in lower concentration until they are evenly distributed. ...
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The constant motion and high velocities of gas particles lead to some important practical consquences. One such consquences is that gases mix rapidly when they come in contact. Take the stopper off a bottle of perfume, for instance, and the odour will spread rapidly through the room as perfume molecules mix with the molecules in the air. This mixing of different gases by random molecular motion and with frequent collision is called diffusion. A similar process in which gas molecules escape without collision through a tiny hole into a vacuum is called effusion. Both the processes follow Graham's law which is mathematically put as r prop sqrt(1//d) . The average distance travelled by molecules between successive collisions is called mean free path. Answer the following questions on the basis of the above information: X mL H_(2) effuses through a hole in a container in 5 s . The time taken for the effusion of the same volume of the gas specified below under identical conditions is

The constant motion and high velocities of gas particles lead to some important practical consquences. One such consquences is that gases mix rapidly when they come in contact. Take the stopper off a bottle of perfume, for instance, and the odour will spread rapidly through the room as perfume molecules mix with the molecules in the air. This mixing of different gases by random molecular motion and with frequent collision is called diffusion. A similar process in which gas molecules escape without collision through a tiny hole into a vacuum is called effusion. Both the processes follow Graham's law which is mathematically put as r prop sqrt(1//d) . The average distance travelled by molecules between successive collisions is called mean free path. Answer the following questions on the basis of the above information: Select the correct statement(s).

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