Q.

Which one of the following materials is magnetic?


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a

Glass

b

Plastic

c

Copper

d

Iron 

answer is D.

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Detailed Solution

Iron is magnetic.
Magnetic materials are the materials that are attracted to a magnet. Magnetic materials include iron, nickel, and cobalt. Magnetite, also known as lodestone, is the first known natural magnet that contains iron. Magnetic materials can also be magnetized, or magnetic materials can be converted into magnets. Non-magnetic materials are substances that are not attracted by a magnet. For example Aluminium, copper, wood, and other materials.
 
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Which one of the following materials is magnetic?