Multiple choice general knowledge

Which word does not belong to this group?

  1. copper

  2. iron

  3. carbon

  4. aluminum
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

In this chemical classification, 'carbon' is the odd one out because it is a non-metal element, while the other three options (copper, iron, aluminum) are all metals. Carbon is also unique as it is not a metal and exists in multiple allotropes including diamond and graphite.

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