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. The Case of a Liquid Solute Dissolved in a Liquid Solvent
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2. 11. Metals Usually Have a Silver or Grey Colour
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8. 7. Non-Metals may be Solid, Liquid or Gases at the Room Temperature.
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10. 6. Metals are Usually Strong. They Have High Tensile Strength.
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11. 3. Non-Metals are Bad Conductors of Heat and Electricity.
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18. Chemical Formula for daily use material
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27. 4. Metals are Lustrous (or Shiny), and can be Polished.
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29. To Study the Properties of a Compound of Iron and Sulphur
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31. To Study the Properties of a Suspension
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35. To Study the Properties of a Solution
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37. 7. Metals are Solids at the Room Temperature
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39. Experiment to Obtain Coloured Component (Dye) From Ink
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41. To Separate a Mixture of Alcohol and Water
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44. 6. Non-Metals are Not Strong. They Have Low Tensile Strength.
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45. Solutions, Suspensions And Colloids
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