The Mole Concept and Stoichiometry — JAMB Chemistry Past Questions
The Mole Concept and Stoichiometry 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 The Mole Concept and Stoichiometry questions with worked answers.
When JAMB examined The Mole Concept and Stoichiometry
The Mole Concept and Stoichiometry 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 The Mole Concept and Stoichiometry questions
Real Chemistry questions tagged to The Mole Concept and Stoichiometry. 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.
Equal moles of ethyne and hydrogen iodide react to give:
- A CH₂ = CHI
- B CH₃ – CI₃
- C CH₃ – CHI
- D CH₂ = CHI₂
Answer: C
Ethyne \( CH \equiv CH \) reacts with HI to form \( CH_3 - CHI \), an addition reaction across the triple bond.
The number of isomers formed by C₆H₁₄ is:
- A 2
- B 3
- C 4
- D 5
Answer and full explanation are inside the app.
Check the answerWhat is the volume of oxygen required to burn completely 45 cm³ of methane at s.t.p?
- A 45.0 cm³
- B 90.0 cm³
- C 135.0 cm³
- D 180.0 cm³
Answer and full explanation are inside the app.
Check the answerOther Chemistry topics
Drill The Mole Concept and Stoichiometry until it stops costing you marks
Filter Chemistry practice to The Mole Concept and Stoichiometry alone, work through it with worked explanations, and let the analytics show you when it has actually stuck. Free to start.
The Mole Concept and Stoichiometry in JAMB Chemistry: common questions
Are The Mole Concept and Stoichiometry questions free?
Yes. Create a free account and every Chemistry question tagged to The Mole Concept and Stoichiometry is available with a worked explanation. Past questions are not paywalled.
Is The Mole Concept and Stoichiometry really examined?
Yes. The Mole Concept and Stoichiometry appears in our bank across 8 JAMB years, taken from the questions themselves rather than a syllabus outline.
Can I practise The Mole Concept and Stoichiometry on its own?
Yes. JambUp lets you filter Chemistry questions to a single topic, so you can drill The Mole Concept and Stoichiometry until it stops costing you marks, then move on to the next weak area.