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Magnets

a natural mag...

Question

a natural magnet is an oxide of iron name is

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Solution

Natural magnets are made up of a mineral called magnetite, and has formula Fe₃O₄.

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Q. The magnetic oxide of iron is:

Which of the following statement is/are true

(i) As long as a metal has some iron in it, you can magnetize it using a magnet

(ii) A magnet is an oxide of iron, hence materials which have iron or is an oxide of iron can be made into a temporary magnet.

Q. Deposits of magnetic oxide iron ore is called

Q. Assertion :Rusting of iron is considered an oxidation reaction. Reason: Rust is another name for iron oxide which occurs when iron is exposed to oxygen and moisture for a long period of time. Overtime the oxygen combines with the metal at atomic level forming a compound called an oxide. Rust forms when iron undergoes oxidation. The main catalyst for the rusting process is water.

Which of the following natural phenomenon can cause the formation of a permanent magnet from an iron ore?

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