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Choose the word which is different from the other words in the group.

  • A.Copper
  • B.Tin
  • C.Brass
  • D.Platinum

Answer: C

The odd one out is Brass.

Copper, tin and platinum are metallic elements. Brass is an alloy, a mixture of copper and zinc.

Grouping by other features does not single out one word: copper and brass are both reddish-yellow, and tin and platinum are both white metals, so the element-versus-alloy distinction is the one that separates exactly one item.

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