Find the odd one out.

Copper

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Aluminium

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Iron

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Wood

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Solution

The correct option is D
Wood

Insulators: The materials that do not conduct electricity are called insulators. For example wood.
Conductors: The materials that conduct electricity are called conductors. For example iron, aluminium, copper, etc.
Thus, the odd one is wood which is an insulator.
Hence, option B is correct.

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