WAEC Chemistry 2025 Objective — Question 33

Question 33 of 50 from the West African Examinations Council (WAEC) Chemistry 2025 Objective paper, with the correct answer and a full explanation.

What is the IUPAC name of the compound CH3CHClCH2OH?

A. chloropropan-1-ol
B. 1-chloropropan-1-ol
C. 2-chloropropan-1-olCorrect
D. 2-chloropropan-3-ol

Explanation

The compound CH3CHClCH2OH has a three-carbon chain with a hydroxyl group (-OH) and a chlorine atom attached to the second carbon atom. Numbering starts from the end nearer to the hydroxyl group to give it the lowest possible number for the functional group, giving the name 2-chloropropan-1-ol.

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