JAMB Biology 2015 Objective — Question 17

Question 17 of 50 from the Joint Admissions and Matriculation Board (JAMB) Biology 2015 Objective paper, with the correct answer and a full explanation.

A property common to the two structures shown (normal pentane and 2-methylbutane) is that they have the same

A. structural and molecular formulae
B. structural formula but different molecular formulae
C. number of carbon but different molecular mass
D. molecular formula but different structural formulaCorrect

Explanation

Normal pentane and 2-methylbutane are isomers — they share the same molecular formula (C₅H₁₂) but have different structural formulae.

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