Question

Magnetite contains which metal?
A. Iron
B. Copper
C. Aluminium
D. Steel

Answer 1

Hint: Magnetite is a rock mineral. It is also a main ore of iron. Its chemical formula is $F{{e}_{3}}{{O}_{4}}$. Hence, iron can be extracted from the magnetite ore. Magnetite is ferromagnetic in nature. This means that when the magnetite ore is placed in an external magnetic field, it is magnetised.

Complete answer:
Magnetite is a rock mineral. It is also a main ore of iron. Its chemical formula is $F{{e}_{3}}{{O}_{4}}$. Hence, iron can be extracted from the magnetite ore.
Therefore, magnetite contains iron.

So, the correct answer is “Option A”.

Additional Information:
Since magnetite contains iron, it shows magnetic properties. That is why it is called magnetite. Magnetite is ferromagnetic in nature. This means that when the magnetite ore is placed in an external magnetic field, it is magnetised. The magnetic effect remains even after the external magnetic field is removed. Therefore, magnetite can be made a permanent magnet.
Magnetite is commonly found in beach sand. These sands are called mineral sands or iron sands. These sands are found in various places like Hong Kong, United States of America and New Zealand.

Note:
Magnetite is used in making permanent magnets. It is also used in foundry as a sand additive to prevent surface defects of the casted metal. Another use of the magnetite is for storing heat or as an iron source for iron catalysts.