mechanical eparation

mechanical eparation
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  • What is the Mechanical Separation 
  • The separation of components in a mixture using the different of their physical properties such as density,particle size,shape,magnetic properties and electric properties is called mechanical separation .
  • Mother today we learnt about Machanical separation. Do you know, what is it?
  • Machanical Methord 1. Winnowing
  • Now I am going to Winnowing rice.
  • Do you know what is the physical property which we used to remove chaff from rice.
  • Yes I know. we use difference in densities of the component.
  • 2.Sieving
  • I know. The physical property that they used is difference in the size of component particles
  • It is the method of seiving
  • Do you see that people are removing gravel from sand.
  • 3. Floating on Water
  • Do you know, what is the physical property used by farmers to remove dud seeds from  seed paddy?
  • 4. Magnetic separation
  • Mother I cant understand what is mean by Magnetic Separation.
  • Magnatic separation is used for separating certain minerals from mineral sands
  • Summary
  • Now tell me, What are the Mechanical methods that you learn grom me.
  • 1.winnowing 2. Sieving 3. floating on water 4. Mechanical separation.
  • I think the difference between the densities of components and water.
  • The physical Property based on it is magnetic property of the components.
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