Three of the following words are alike in some manner and hence form a group. Which word does NOT belong to that group?
(The words must be considered as meaningful English words and must not be grouped based on the number of letters/number of consonants/vowels in the word).
Show answer & explanation
Correct answer: D
Explanation
CO₂, H and O₃ are non-metals or molecular forms, whereas Mg is a metal. Hence, Mg is the odd one out.
Hence, the correct answer is option 4.