JAMB Chemistry 2023 Objective — Question 18

Question 18 of 40 from the Joint Admissions and Matriculation Board (JAMB) Chemistry 2023 Objective paper, with the correct answer and a full explanation.

The following are salts EXCEPT

A. Zinc nitrate
B. Sodium carbonate
C. Calcium oxideCorrect
D. Magnesium chloride

Explanation

Zn(NO₃)₂, Na₂CO₃ and MgCl₂ are salts. CaO is a base (metal oxide). Bases are not salts — they are oxides, hydroxides, or other compounds that react with acids.

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