Question: Question 4 The iron oxide, ( mathrm { Fe } _ { 3 } mathrm { O } _ { 4 }

Question 4
The iron oxide, \(\mathrm{Fe}_{3}\mathrm{O}_{4}\), is an example of which of the following material categories,
paramagnetic materials,
ferromagnetic materials,
ferrimagnetic materials,
antiferromagnetic materials,
Question 5
Which of the following categories of materials can be used for permanent magnets? The correct answer is,
antiferromagnetic materials,
diamagnetic materials,
ferrimagnetic materials,
paramagnetic materials,
Question 4 The iron oxide, \ ( \ mathrm { Fe } _

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