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Why is the cooling unit of refrigerator made at the top?
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The upper portion of the freezer works on convection current. ... When the hot air reaches to the top from lower areas and cool air being more dense shifts downward so this shifting result in a current of air called a convection current.
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Answer:
The upper portion of the freezer works on convection current. ... When the hot air reaches to the top from lower areas and cool air being more dense shifts downward so this shifting result in a current of air called a convection current.
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