To expel hot air out of the kitchen, A has an exhaust fan fitted on the window of her kitchen and B has a similar exhaust fan fitted on the wall near the ceiling of her kitchen. Which of the exhaust fan will expel the hot air more effectively? Explain why. [NCERT Exemplar; HOTS]
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B will expel hot air out of the kitchen most effectively. Explanation: Exhaust fans are generally fitted near the ceilings as the warm air rises up due to convection and easily goes out through the exhaust fans out of the kitchen. On the other hand, fresh air comes into the kitchen from the windows.
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B will expel hot air out of the kitchen most effectively...
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