Post-UTME Chemistry 2018 Objective — Question 6

Question 6 of 21 from the Post-UTME Screening (Post-UTME) Chemistry 2018 Objective paper, with the correct answer and a full explanation.

The IUPAC name for the compound CH2=C(CH3)-C(CH3)=CH2 type structure shown is

A. 2,3-dimethylpent-2,3-diene
B. 2,3-dimethylpent-2-ene
C. 3,4-dimethylpent-2-eneCorrect
D. 3,4-dimethylheptene

Explanation

Based on the branched structure shown (methyl substituents at the 3 and 4 positions of a pentene chain), the IUPAC name is 3,4-dimethylpent-2-ene. Flagged: the drawn structure in the scan was partly unclear, so this naming is a best-effort match.

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