JAMB Chemistry 2025 Objective — Question 22

Question 22 of 40 from the Joint Admissions and Matriculation Board (JAMB) Chemistry 2025 Objective paper, with the correct answer and a full explanation.

How many structural isomers exist for C₅H₁₂?

A. 2
B. 3Correct
C. 4
D. 5

Explanation

Three structural isomers: (1) n-pentane, (2) 2-methylbutane, (3) 2,2-dimethylpropane.

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