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| Q. |
The freezer in a refrigerator is fitted near the top – |
| A. | to keep it away from hot compressor which is nearer to the bottom |
| B. | because of convenience |
| C. | it facilitates convection currents |
| D. | to minimise power consumption |
| Answer» C. it facilitates convection currents | |
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Explanation: The freezer in a refrigerator is fitted near the top so that it can cool the whole interior by setting up convection currents. Most household freezers maintain temperatures from (-23 to -18 degree C), although some freezer- only units can achieve (-34 degree C), and lower. Refrigerators generally do not achieve lower than (-23 degree C), since the same coolant loop serves both compartments: Lowering the freezer compartment temperature excessively causes difficulties in maintaining above-reezing temperature in the refrigerator compartment. |
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