প্রশ্নঃ মাটির কলসিতে পানি ঠাণ্ডা থাকে কেন?
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ক.Vessel does not allow the hot air to come
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খ.Water coming out of the pores evaporates and takes heat from the water
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গ.Cooled air passes through the pores of vessel
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ঘ.It is not correct
উত্তরঃ খ
 Vessel does not allow the hot air to come খ) Water coming out of the pores evaporates and takes heat from the water গ) Cooled air passes through the pores of vessel ঘ) It is not correct উত্তর: খ) Water coming out of the pores evaporates and takes heat from the water
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