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WAEC Chemistry 2019 Objective — Question 15

Question 15 of 50 from the West African Examinations Council (WAEC) Chemistry 2019 Objective paper, with the correct answer and a full explanation.

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The name of the compound CH3C(CH3)2CH2CH2CH3 is

  • A. 2-methyl butane
  • B. 2,2-dimethyl butane
  • C. 2-methyl pentane
  • D. 2,2-dimethyl pentaneCorrect

Explanation

The longest chain has 5 carbons (pentane) with two methyl groups on carbon 2, giving the IUPAC name 2,2-dimethylpentane.

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