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JAMB Chemistry 1994 Question 41

Question 41

Introduction to Organic Chemistry

Which of the following compounds is NOT an isomer of 2,2 dimethylbutane?

  1. A.2-methylbutane
  2. B.3-methylpentane
  3. C.2,3-dimethylbutane
  4. D.2-methylpentane
Show the answer and explanation

Answer: A (2-methylbutane)

Explanation

2,2-dimethylbutane is C6H14. 2-methylbutane has only 5 carbons (C5H12), so it cannot be an isomer; the other three are all C6H14.