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प्रश्न
Describe how an electromagnet could be used to separate copper from iron in a scrap yard.
उत्तर
In this process of separation, a large electromagnet is attached to a crane and moved over the scrap yard. It picks up the iron objects from the mixture and carries them to other location. Further, iron objects is dropped by switching off the current of the electromagnet coil. In this way, we will be left with copper objects in the scrap yard.
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