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Question

Select the correct statement(s):


Correct Answer
A
Gravity separation method is used in concentration of oxide ore and carbonate ore
Your Answer
B
Magnetic separation method is used for separation of non - magnetic rutile and magnetic impurity of chlorapatite
Correct Answer
C
Fe3O4 is magnetic and impurities non - magnetic
Your Answer
D
MnO2 is non - magnetic and impurities magnetic

Solution

The correct options are
A Gravity separation method is used in concentration of oxide ore and carbonate ore
C Fe3O4 is magnetic and impurities non - magnetic
As a general rule of thumb, gravity separation is indeed used for oxide and carbonate ores.
Rutile is definitely magnetic whereas chlorapatite is not. Likewise, MnO2 is magnetic. 
 

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