Multiple choice general knowledge math & puzzles

In each of the following questions, 5 words are given, out of which four are alike in some manner, while the fifth one is different. Choose out the odd one:

  1. Copper

  2. Zinc

  3. Brass

  4. Aluminium

  5. Iron
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Copper, Zinc, Aluminium, and Iron are all pure chemical elements. Brass is an alloy made of copper and zinc, not a pure element. This makes it the odd one out.

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