Electrochemistry — JAMB Chemistry Past Questions
Electrochemistry is one topic inside the JAMB Chemistry syllabus, and drilling it on its own is usually faster than revising the whole subject again. Below: which JAMB years have examined it, then real Electrochemistry questions with worked answers.
When JAMB examined Electrochemistry
Electrochemistry questions appear in our bank for the JAMB years below. This is taken from the questions themselves, not from a syllabus outline — so if a year is listed, this topic was genuinely examined that year.
A topic that keeps reappearing is a topic JAMB keeps testing. Newer years matter most, because question style drifts.
Try Electrochemistry questions
Real Chemistry questions tagged to Electrochemistry. The first is worked through completely so you can see how our explanations read — the rest you can attempt now and check inside the app.
The effluent of an industrial plant used in the electrolysis of molten sodium chloride, with a flowing mercury cathode may contain impurities like:
- A Chlorine
- B Oxygen
- C Mercury (II) chloride
- D Hydrogen
Answer: C
Mercury cathodes can lead to contamination with mercury compounds, especially mercury(II) chloride.
What current will deposit 3.25g of zinc in 2 hrs? [Zn = 65, F = 96500 C/mol]
- A 2.00 A
- B 3.25 A
- C 1.34 A
- D 0.67 A
Answer and full explanation are inside the app.
Check the answerFor the reaction: Zn²⁺ + 2e⁻ → Zn; ΔH = −147 kJ/mol. What is the corresponding value of E° cell?
- A 1.52 V
- B −0.76 V
- C 0.76 V
- D −1.52 V
Answer and full explanation are inside the app.
Check the answerOther Chemistry topics
Drill Electrochemistry until it stops costing you marks
Filter Chemistry practice to Electrochemistry alone, work through it with worked explanations, and let the analytics show you when it has actually stuck. Free to start.
Electrochemistry in JAMB Chemistry: common questions
Are Electrochemistry questions free?
Yes. Create a free account and every Chemistry question tagged to Electrochemistry is available with a worked explanation. Past questions are not paywalled.
Is Electrochemistry really examined?
Yes. Electrochemistry appears in our bank across 6 JAMB years, taken from the questions themselves rather than a syllabus outline.
Can I practise Electrochemistry on its own?
Yes. JambUp lets you filter Chemistry questions to a single topic, so you can drill Electrochemistry until it stops costing you marks, then move on to the next weak area.