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5 ml 5 ml of a water was taken in a test tube and China dish separately this sample work apt under different condition as below
1) both the samples are kept under a fan
2) both the samples are kept inside of cupboard
a) State In which case operation will be faster give reason to support your answers
b) how will be the rate of evaporation change if above activitiy carried out on a rainy day?
1) both the samples are kept under a fan
2) both the samples are kept inside of cupboard
a) State In which case operation will be faster give reason to support your answers
b) how will be the rate of evaporation change if above activitiy carried out on a rainy day?
Verified Answer
5 ml 5 ml of a water was taken in a test tube and China dish separatel...
- Evaporation will be faster in Case 1, where the
dishes are kept under the fan. This is because when the wind is blowing, it makes the rate of evaporation faster. If the same experiment is carried out on a rainy day, the water will not evaporate too much. This is because -
- During the rainy season, humidity content in the air is high. So if the air is already laden with moisture, there is not much chance of the water evaporating into the atmosphere.- During rainy days, the temperature is low, so the rate of evaporation will be slower.- The rate of evaporation depends upon the amount of sunlight received. More is the sunlight, faster is the rate of evaporation. During rainy days, sunlight is not much.- And if winds blow faster, rate of evaporation will also be faster.
- During the rainy season, humidity content in the air is high. So if the air is already laden with moisture, there is not much chance of the water evaporating into the atmosphere.- During rainy days, the temperature is low, so the rate of evaporation will be slower.- The rate of evaporation depends upon the amount of sunlight received. More is the sunlight, faster is the rate of evaporation. During rainy days, sunlight is not much.- And if winds blow faster, rate of evaporation will also be faster.
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5 ml 5 ml of a water was taken in a test tube and China dish separatel...
Case 1: Keeping both samples under a fan
When both samples are kept under a fan, the rate of evaporation will be faster compared to the case where they are kept inside a cupboard. This is because the fan increases the air circulation around the samples, resulting in a higher rate of evaporation.
The fan helps in removing the water vapor molecules that are evaporating from the surface of the water. By continuously blowing air over the samples, the fan ensures that the water vapor is quickly carried away, creating a concentration gradient that facilitates faster evaporation. The increased air circulation also helps in maintaining a lower humidity level around the samples, which further enhances the rate of evaporation.
On the other hand, if the samples are kept inside a cupboard, the air circulation is restricted. This limits the movement of water vapor molecules away from the surface of the water. As a result, the concentration gradient is reduced, and the rate of evaporation decreases. The enclosed environment of the cupboard also leads to higher humidity levels, which further slows down the evaporation process.
Therefore, in this case, the operation will be faster when both samples are kept under a fan due to the enhanced air circulation and lower humidity levels.
Case 2: Keeping both samples inside a cupboard
If both samples are kept inside a cupboard, the rate of evaporation will be slower compared to when they are placed under a fan. This is because the enclosed environment of the cupboard restricts air circulation and traps the water vapor molecules near the surface of the water.
Inside the cupboard, the limited air movement hinders the removal of water vapor from the samples. The concentration of water vapor molecules near the water surface increases, leading to a reduced concentration gradient. As a result, the rate of evaporation decreases.
Additionally, the enclosed space of the cupboard often has higher humidity levels. This further diminishes the rate of evaporation since the air is already saturated with moisture, and the concentration gradient is reduced.
Therefore, in this case, the operation will be slower when both samples are kept inside a cupboard due to the restricted air circulation and higher humidity levels.
Effect of rainy day
On a rainy day, the rate of evaporation will be significantly affected. Rainy days are characterized by high humidity levels in the atmosphere due to the presence of moisture in the air. This high humidity reduces the rate of evaporation.
When the samples are kept under a fan on a rainy day, the increased air circulation will still aid in the evaporation process. However, the high humidity in the air will slow down the rate of evaporation compared to a normal day. The moisture-laden air will already be close to saturation, resulting in a reduced concentration gradient and slower evaporation.
Similarly, if the samples are kept inside a cupboard on a rainy day, the restricted air circulation coupled with the high humidity levels will further decrease the rate of evaporation. The moisture in the air will hinder the movement of water vapor molecules away from the water surface, making evaporation even slower.
In summary, on a rainy day, the rate of evaporation will be slower regardless of whether the samples are kept under a fan or inside a cupboard. The high humidity in the atmosphere hampers the evaporation process by reducing the concentration gradient and limiting the movement of water vapor molecules.
When both samples are kept under a fan, the rate of evaporation will be faster compared to the case where they are kept inside a cupboard. This is because the fan increases the air circulation around the samples, resulting in a higher rate of evaporation.
The fan helps in removing the water vapor molecules that are evaporating from the surface of the water. By continuously blowing air over the samples, the fan ensures that the water vapor is quickly carried away, creating a concentration gradient that facilitates faster evaporation. The increased air circulation also helps in maintaining a lower humidity level around the samples, which further enhances the rate of evaporation.
On the other hand, if the samples are kept inside a cupboard, the air circulation is restricted. This limits the movement of water vapor molecules away from the surface of the water. As a result, the concentration gradient is reduced, and the rate of evaporation decreases. The enclosed environment of the cupboard also leads to higher humidity levels, which further slows down the evaporation process.
Therefore, in this case, the operation will be faster when both samples are kept under a fan due to the enhanced air circulation and lower humidity levels.
Case 2: Keeping both samples inside a cupboard
If both samples are kept inside a cupboard, the rate of evaporation will be slower compared to when they are placed under a fan. This is because the enclosed environment of the cupboard restricts air circulation and traps the water vapor molecules near the surface of the water.
Inside the cupboard, the limited air movement hinders the removal of water vapor from the samples. The concentration of water vapor molecules near the water surface increases, leading to a reduced concentration gradient. As a result, the rate of evaporation decreases.
Additionally, the enclosed space of the cupboard often has higher humidity levels. This further diminishes the rate of evaporation since the air is already saturated with moisture, and the concentration gradient is reduced.
Therefore, in this case, the operation will be slower when both samples are kept inside a cupboard due to the restricted air circulation and higher humidity levels.
Effect of rainy day
On a rainy day, the rate of evaporation will be significantly affected. Rainy days are characterized by high humidity levels in the atmosphere due to the presence of moisture in the air. This high humidity reduces the rate of evaporation.
When the samples are kept under a fan on a rainy day, the increased air circulation will still aid in the evaporation process. However, the high humidity in the air will slow down the rate of evaporation compared to a normal day. The moisture-laden air will already be close to saturation, resulting in a reduced concentration gradient and slower evaporation.
Similarly, if the samples are kept inside a cupboard on a rainy day, the restricted air circulation coupled with the high humidity levels will further decrease the rate of evaporation. The moisture in the air will hinder the movement of water vapor molecules away from the water surface, making evaporation even slower.
In summary, on a rainy day, the rate of evaporation will be slower regardless of whether the samples are kept under a fan or inside a cupboard. The high humidity in the atmosphere hampers the evaporation process by reducing the concentration gradient and limiting the movement of water vapor molecules.
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5 ml 5 ml of a water was taken in a test tube and China dish separatel...
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5 ml 5 ml of a water was taken in a test tube and China dish separately this sample work apt under different condition as below1) both the samples are kept under a fan2) both the samples are kept inside of cupboarda) State In which case operation will be faster give reason to support your answersb) how will be the rate of evaporation change if above activitiy carried out on a rainy day?
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5 ml 5 ml of a water was taken in a test tube and China dish separately this sample work apt under different condition as below1) both the samples are kept under a fan2) both the samples are kept inside of cupboarda) State In which case operation will be faster give reason to support your answersb) how will be the rate of evaporation change if above activitiy carried out on a rainy day? for Class 9 2024 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about 5 ml 5 ml of a water was taken in a test tube and China dish separately this sample work apt under different condition as below1) both the samples are kept under a fan2) both the samples are kept inside of cupboarda) State In which case operation will be faster give reason to support your answersb) how will be the rate of evaporation change if above activitiy carried out on a rainy day? covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for 5 ml 5 ml of a water was taken in a test tube and China dish separately this sample work apt under different condition as below1) both the samples are kept under a fan2) both the samples are kept inside of cupboarda) State In which case operation will be faster give reason to support your answersb) how will be the rate of evaporation change if above activitiy carried out on a rainy day?.
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