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Q.

[7]
A girl dropped a box of iron pins. With which material can she pick the pins easily?

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a

Iron

b

Magnet

c

Aluminium

d

Sand

answer is B.

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Detailed Solution

A girl can pick pins easily with the help of a magnet.
"A piece of metal that can pull specific types of metal toward itself is known as a magnet."
A magnet attracts the iron. So the girl can easily pick the dropped pins with the help of a magnet. However, if the pins were made of stainless steel, she couldn't have picked the pins easily because a magnet does not attract stainless steel. So the pin should be made up of magnetic material such as iron. The following figure shows how pins stick to the magnet.
Magnet and pins Royalty Free Vector Image - VectorStock

Magnet and pins Royalty Free Vector Image - VectorStock

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