Separation of Scrap Iron
Waste materials supplied to factories contain a number of scrap metals including iron. So,in factories, scrap iron is separated from the heap of waste materials by using big electromagnets fitted to a crane.(A magnet which works with an electric current is called an electromagnet). When a crane fitted with a powerful electromagnet is lowered on to the heap of waste materials, then the scrap iron objects present in the heap cling to the electromagnet (see Figure 57). The crane is then moved up and away to drop these scrap iron objects at a separate place. In this way, scrap iron is separated from the heap of waste materials.
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Matter in Our Surroundings - Notes
1. 11. Metals Usually Have a Silver or Grey Colour
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2. The Case of a Liquid Solute Dissolved in a Liquid Solvent
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8. 7. Non-Metals may be Solid, Liquid or Gases at the Room Temperature.
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10. 3. Non-Metals are Bad Conductors of Heat and Electricity.
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11. 6. Metals are Usually Strong. They Have High Tensile Strength.
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18. Chemical Formula for daily use material
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24. To Study the Properties of a Compound of Iron and Sulphur
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28. 4. Metals are Lustrous (or Shiny), and can be Polished.
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30. To Separate a Mixture of Alcohol and Water
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31. To Study the Properties of a Solution
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35. 7. Metals are Solids at the Room Temperature
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36. To Study the Properties of a Suspension
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39. To Separate the Salt-Water Mixture (or Salt-Solution)
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46. Separation of Mixture Of Two Solids
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49. 6. Non-Metals are Not Strong. They Have Low Tensile Strength.
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