WAEC Chemistry 2025 Objective — Question 38
Question 38 of 50 from the West African Examinations Council (WAEC) Chemistry 2025 Objective paper, with the correct answer and a full explanation.
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Which of the following elements is commercially obtained by the electrolysis of its fused salt?
- A. silver
- B. copper
- C. helium
- D. sodiumCorrect
Explanation
Sodium is obtained by the electrolysis of molten sodium chloride (NaCl) in a process known as the Downs process. Sodium metal is deposited at the cathode and chlorine gas is released at the anode.
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