If you are provided with parafin oil,iron nail,bar magnet ,battery,coilconductor wire
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For making electromagnet, iron nailed is first coiled with wire and then the wire is connected to a battery. When any magnetic material is brought near the bar magnet, it will get attracted towards the magnet . While any non-magnetic material will not get attracted by it.
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hak A hypotonic solution is any solution that has a lower osmotic pressure than another solution. In the biological fields, this generally refers to a solution that has less solute and more water than another solution.
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