Class 9 Exam > Class 9 Questions > Water kept in an earthen pot becomes cool in ...
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Water kept in an earthen pot becomes cool in summer, because
(A) Molecules of water escape through pores, and cause cooling
(B) Earthen pots are made up of clay
(C) It decreases the temperature of water
(D) In summer, the rate of evaporation of water is faster.
(A) Molecules of water escape through pores, and cause cooling
(B) Earthen pots are made up of clay
(C) It decreases the temperature of water
(D) In summer, the rate of evaporation of water is faster.
- a)(a), (b) and (c) are correct
- b)(a) and (b) are correct
- c)(b) and (c) are correct
- d)All of these
Correct answer is option 'B'. Can you explain this answer?
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Verified Answer
Water kept in an earthen pot becomes cool in summer, because(A)Molecul...
Explanation:
The correct answer is B: (a) and (b) are correct.
Reasoning:
- Water kept in an earthen pot becomes cool in summer due to the following reasons:
- Molecules of water escape through pores and cause cooling: Earthen pots are made up of clay, which is a porous material. This means that it has small holes or pores that allow the passage of air and moisture. When water is stored in an earthen pot, some of the water molecules evaporate through these pores. This process of evaporation requires heat energy, which is taken from the remaining water molecules. As a result, the temperature of the water decreases, leading to a cooling effect.
- Earthen pots are made up of clay: Clay is an excellent insulator and has a high heat capacity. When water is stored in an earthen pot, the clay absorbs some of the heat from the water, keeping it cool.
- In summer, the rate of evaporation of water is faster: In hot weather, the temperature is higher, which increases the rate of evaporation. This means that water stored in an earthen pot will evaporate more quickly, leading to a cooling effect.
Therefore, both options (a) and (b) are correct explanations for why water kept in an earthen pot becomes cool in summer.
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The correct answer is B: (a) and (b) are correct.
Reasoning:
- Water kept in an earthen pot becomes cool in summer due to the following reasons:
- Molecules of water escape through pores and cause cooling: Earthen pots are made up of clay, which is a porous material. This means that it has small holes or pores that allow the passage of air and moisture. When water is stored in an earthen pot, some of the water molecules evaporate through these pores. This process of evaporation requires heat energy, which is taken from the remaining water molecules. As a result, the temperature of the water decreases, leading to a cooling effect.
- Earthen pots are made up of clay: Clay is an excellent insulator and has a high heat capacity. When water is stored in an earthen pot, the clay absorbs some of the heat from the water, keeping it cool.
- In summer, the rate of evaporation of water is faster: In hot weather, the temperature is higher, which increases the rate of evaporation. This means that water stored in an earthen pot will evaporate more quickly, leading to a cooling effect.
Therefore, both options (a) and (b) are correct explanations for why water kept in an earthen pot becomes cool in summer.
Most Upvoted Answer
Water kept in an earthen pot becomes cool in summer, because(A)Molecul...
Explanation:
Earthen pots are commonly used in many parts of the world to store and cool water, especially during the hot summer months. The cooling effect of water in an earthen pot is due to a combination of factors.
1. Porous nature of clay:
Earthen pots are made up of clay, which is a porous material. Clay pots have tiny pores and small holes on their surface. These pores allow for the movement of air and moisture between the inside and outside of the pot.
2. Evaporation:
When water is stored in an earthen pot, some of it evaporates through the tiny pores in the clay. Evaporation is the process by which a liquid turns into a gas. During evaporation, the molecules of water gain energy from the surroundings and escape into the air as water vapor.
3. Latent heat of evaporation:
To evaporate, water molecules require energy. This energy is taken from the surrounding water, resulting in a decrease in temperature. The process of evaporation cools down the remaining water in the pot.
4. Heat transfer:
The cooling effect is further enhanced by the fact that the earthen pot is in contact with the outside air. The air outside the pot is usually at a lower temperature than the stored water. Therefore, heat from the water is transferred to the surrounding air, causing further cooling.
5. Natural insulation:
Clay is a good insulator of heat. It prevents the outside heat from reaching the water inside. This helps in maintaining a lower temperature of the water.
Therefore, the correct option is (b) - (a) and (b) are correct. The cooling of water in an earthen pot is primarily due to the evaporation of water through the pores of the clay pot and the natural insulation provided by the clay material.
Earthen pots are commonly used in many parts of the world to store and cool water, especially during the hot summer months. The cooling effect of water in an earthen pot is due to a combination of factors.
1. Porous nature of clay:
Earthen pots are made up of clay, which is a porous material. Clay pots have tiny pores and small holes on their surface. These pores allow for the movement of air and moisture between the inside and outside of the pot.
2. Evaporation:
When water is stored in an earthen pot, some of it evaporates through the tiny pores in the clay. Evaporation is the process by which a liquid turns into a gas. During evaporation, the molecules of water gain energy from the surroundings and escape into the air as water vapor.
3. Latent heat of evaporation:
To evaporate, water molecules require energy. This energy is taken from the surrounding water, resulting in a decrease in temperature. The process of evaporation cools down the remaining water in the pot.
4. Heat transfer:
The cooling effect is further enhanced by the fact that the earthen pot is in contact with the outside air. The air outside the pot is usually at a lower temperature than the stored water. Therefore, heat from the water is transferred to the surrounding air, causing further cooling.
5. Natural insulation:
Clay is a good insulator of heat. It prevents the outside heat from reaching the water inside. This helps in maintaining a lower temperature of the water.
Therefore, the correct option is (b) - (a) and (b) are correct. The cooling of water in an earthen pot is primarily due to the evaporation of water through the pores of the clay pot and the natural insulation provided by the clay material.
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Water kept in an earthen pot becomes cool in summer, because(A)Molecules of water escape through pores, and cause cooling(B) Earthen pots are made up of clay(C) It decreases the temperature of water(D)In summer, the rate of evaporation of water is faster.a)(a), (b) and (c) are correctb)(a) and (b) are correctc)(b) and (c) are correctd)All of theseCorrect answer is option 'B'. Can you explain this answer?
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Water kept in an earthen pot becomes cool in summer, because(A)Molecules of water escape through pores, and cause cooling(B) Earthen pots are made up of clay(C) It decreases the temperature of water(D)In summer, the rate of evaporation of water is faster.a)(a), (b) and (c) are correctb)(a) and (b) are correctc)(b) and (c) are correctd)All of theseCorrect answer is option 'B'. Can you explain this answer? 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 Water kept in an earthen pot becomes cool in summer, because(A)Molecules of water escape through pores, and cause cooling(B) Earthen pots are made up of clay(C) It decreases the temperature of water(D)In summer, the rate of evaporation of water is faster.a)(a), (b) and (c) are correctb)(a) and (b) are correctc)(b) and (c) are correctd)All of theseCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Water kept in an earthen pot becomes cool in summer, because(A)Molecules of water escape through pores, and cause cooling(B) Earthen pots are made up of clay(C) It decreases the temperature of water(D)In summer, the rate of evaporation of water is faster.a)(a), (b) and (c) are correctb)(a) and (b) are correctc)(b) and (c) are correctd)All of theseCorrect answer is option 'B'. Can you explain this answer?.
Water kept in an earthen pot becomes cool in summer, because(A)Molecules of water escape through pores, and cause cooling(B) Earthen pots are made up of clay(C) It decreases the temperature of water(D)In summer, the rate of evaporation of water is faster.a)(a), (b) and (c) are correctb)(a) and (b) are correctc)(b) and (c) are correctd)All of theseCorrect answer is option 'B'. Can you explain this answer? 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 Water kept in an earthen pot becomes cool in summer, because(A)Molecules of water escape through pores, and cause cooling(B) Earthen pots are made up of clay(C) It decreases the temperature of water(D)In summer, the rate of evaporation of water is faster.a)(a), (b) and (c) are correctb)(a) and (b) are correctc)(b) and (c) are correctd)All of theseCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Water kept in an earthen pot becomes cool in summer, because(A)Molecules of water escape through pores, and cause cooling(B) Earthen pots are made up of clay(C) It decreases the temperature of water(D)In summer, the rate of evaporation of water is faster.a)(a), (b) and (c) are correctb)(a) and (b) are correctc)(b) and (c) are correctd)All of theseCorrect answer is option 'B'. Can you explain this answer?.
Solutions for Water kept in an earthen pot becomes cool in summer, because(A)Molecules of water escape through pores, and cause cooling(B) Earthen pots are made up of clay(C) It decreases the temperature of water(D)In summer, the rate of evaporation of water is faster.a)(a), (b) and (c) are correctb)(a) and (b) are correctc)(b) and (c) are correctd)All of theseCorrect answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 9.
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ample number of questions to practice Water kept in an earthen pot becomes cool in summer, because(A)Molecules of water escape through pores, and cause cooling(B) Earthen pots are made up of clay(C) It decreases the temperature of water(D)In summer, the rate of evaporation of water is faster.a)(a), (b) and (c) are correctb)(a) and (b) are correctc)(b) and (c) are correctd)All of theseCorrect answer is option 'B'. Can you explain this answer? tests, examples and also practice Class 9 tests.
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