Magnetic Separation


 
 
Concept Explanation
 

Magnetic Separation

This method is used to separate substances when one of that substance is magnetic in nature. The separation is always done with the help of a magnet. For example, from a mixture of iron filings and sulphur, iron can be separated by this method. When a magnet is just brought over the mixture of iron filings and sulphur, iron filings get attached to the magnet. Sulphur, being a non - magnetic substance, does not attracted towards a magnet and hence is left behind.

Recycling centres use magnetic separation often to separate components from recycling, isolate metals, and purify ores. Overhead magnets, magnetic pulleys, and the magnetic drums were the methods used  in the recycling industry. Magnetic separation is also useful in mining iron as it is attached to a magnet.

                     

 

 

Sample Questions
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Question : 1

For the separation of the components of a mixture of iodine, iron filings and sawdust. Arrange the processes in a sequential order.

  1. A:  The mixture is covered with an inverted funnel. The outside surface of the funnel is wrapped with a moist filter paper and the mixture is gently heated. Iodine is separated.
  2. B:  A strong bar magnet is moved through the mixture. The iron filings are separated.
  3. C:  Sawdust is left after iodine separates
  4. D:  The mixture is exposed to wind to remove sawdust.
Right Option : A
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Question : 2

Which of the following are correct :

(a)  Magnetic separation method is used to separate substances when one of that substance is magnetic in nature.

(b)  Copper and Sodium can be separated by magnetic separation method easily.

(c) Iron filings and sulphur can be separated by magnetic separation method easily.

Right Option : C
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Explanation
Question : 3

Magnetic separation method can be used to separate _____________________________.

Right Option : D
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Explanation
 
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