Give reasons for the following: 1.There is a metal grill on the back of a fridge. 2. Copper wires are commonly used in household cables. 3.Graphite is used for making electrodes.
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Metal grill is at the back of the fridge because it is involved in recirculation of refrigerant fluid. Explanation: While the fridge works it leads to elimination of small amount of water and it is called refrigerant fluid. This fluid must be circulated back into the refrigerator.
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