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[" 45.An ideal refrigerator is used to t...

[" 45.An ideal refrigerator is used to transfer heat "],[" from a freezer at "-23^(@)C" to the surroundings at "],[27^(@)C" .Its coefficient of performance is "],[[" a) "2.5," () "5],[" (17.5"," d) "10," ing "]]

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