Q.

Choose the incorrect option about magnetic separation. 

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a

 the magnetic particles move a little more with the roller and fall at another place making them separated. 

b

The process that is used for magnetic separation separates non-magnetic substances from those which are magnetic. 

c

The non-magnetic particles move towards the magnetic roller as there is no attraction between them and the magnetic roller.  

d

Magnetic separation is the process of separating components of mixtures by using a magnet to attract magnetic substances. 

answer is C.

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Detailed Solution

The non-magnetic particles fall off straight from the magnetic roller as there is no attraction between them and the magnetic roller.  

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