This is for UTME Candidates looking for JAMB Chemistry Questions and Answers 2026. Especially for those aspiring for Medicine, Pharmacy, Nursing and other Health Science courses requiring Chemistry. Here you will get genuine Chemistry JAMB questions and answers for 2026. Your duty now is to read through them as many times as possible and get ready to smash your Chemistry paper. Remember to use the comments sections if you have questions, and don’t forget to join our Free Online Tutorial Classes on YouTube. (Subscribe to the Channel)
Table of Contents
JAMB Chemistry Questions and Answers 2026
The following JAMB Chemistry Questions and Answers 2026 are the questions you should expect in your Chemistry paper in 2026 UTME, together with their answers. You can click on the answer keys to get explanations.
UTME Chemistry 2026
Choose the correct option. Tap the blue button for answer & explanation.
1. The purest form of iron is
Explanation: Wrought iron is 99.9% pure iron with less than 0. l% carbon.
2. The gas responsible for the greenhouse effect is
Explanation: CO₂ traps heat in the atmosphere.
3. The oxidation state of chlorine in HClO₄ is
Explanation: HClO₄ → H⁺ + ClO₄⁻; O = -2 ×4 = -8; Cl = +7.
4. The IUPAC name for CH₃CH₂C(CH₃)₂CH₂OH is
Explanation: Longest chain 4 carbons, OH at position 1, two methyl groups at carbon 2.
5. The radioactive isotope used in dating archaeological findings is
Explanation: Carbon-14 (half-life 5730 years).
6. The gas that turns lime water milky is
Explanation: CO₂ + Ca(OH)₂ → CaCO₃↓ (milky) + H₂O.
7. The process of separating petroleum fractions is
Explanation: Fractional distillation based on boiling points.
8. The enzyme that converts glucose to ethanol is
Explanation: Zymase (in yeast) → alcoholic fermentation.
9. The hybridization in the carbon atom of ethyne is
Explanation: Triple bond → sp hybridization.
10. 2.8 g of a gas occupies 2.24 dm³ at STP. Its relative molecular mass is
Explanation: 1 mole = 22.4 dm³ at STP → 2.24 dm³ = 0.1 mole → RMM = 2.8 / 0.1 = 28 (N₂).
11. The brown ring test is used to detect
Explanation: [Fe(H₂O)₅NO]SO₄ → brown ring.
12. The metal used as catalyst in the contact process is
Explanation: Vanadium(V) oxide for 2SO₂ + O₂ → 2SO₃.
13. The solubility of a gas increases with
Explanation: Henry’s law.
14. The reaction between an acid and a base is called
Explanation: Acid + Base → Salt + Water.
15. The ore of aluminium is
Explanation: Al₂O₃·2H₂O.
16. The allotrope of carbon used in nuclear reactors is
Explanation: Graphite as moderator.
17. The number of electrons in the valence shell of an element with atomic number 17 is
Explanation: Chlorine: 2,8,7.
18. The isomerism exhibited by ethanol and dimethyl ether is
Explanation: Different functional groups (alcohol vs ether).
19. The pH of 0.001 M HCl is
Explanation: pH = -log[H⁺] = -log(0.001) = 3.
20. The catalyst used in the hydrogenation of vegetable oil is
Explanation: Nickel catalyst.
21. The gas evolved when dilute H₂SO₄ reacts with Zn is
Explanation: Zn + H₂SO₄ → ZnSO₄ + H₂↑.
22. The common name for ethanedioic acid is
Explanation: (COOH)₂.
23. The bleaching action of chlorine is due to
Explanation: Cl₂ + H₂O → HCl + HOCl → oxidation.
24. The monomer of protein is
Explanation: Linked by peptide bonds.
25. The half-life of a radioactive element is 12 days. What fraction remains after 36 days?
Explanation: 36/12 = 3 half-lives → (1/2)³ = 1/8.
26. The electronic configuration of an element with atomic number 20 is
Explanation: Calcium: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s².
27. The substance that turns blue litmus red is
Explanation: Acidic substance.
28. The process of converting starch to ethanol is
Explanation: Yeast + zymase.
29. The main ore of iron is
Explanation: Fe₂O₃.
30. The chemical used for coagulation in water treatment is
Explanation: Alum.
31. The bond in nitrogen molecule is
Explanation: N≡N.
32. The colour of methyl orange in alkaline medium is
Explanation: Yellow in base, red in acid.
33. The atomic number of an element is 11. Its electronic configuration is
Explanation: Sodium (Na).
34. The gas responsible for acid rain is
Explanation: SO₂ + H₂O → H₂SO₃.
35. The product of the electrolysis of brine using carbon electrodes is
Explanation: Anode: Cl₂, Cathode: H₂, Solution: NaOH.
36. The compound that gives a brick-red flame test is
Explanation: Calcium.
37. The hydrocarbon that decolorizes bromine water is
Explanation: Unsaturated (alkene).
38. The separation technique used for mixtures of dyes is
Explanation: Paper chromatography.
39. The reagent used to test for starch is
Explanation: Blue-black colour.
40. The functional group in ethanol is
Explanation: Hydroxyl group (alcohol).
Read Also: 20 Most Repeated Topics in JAMB Chemistry Exams 2026
Conclusion
So here you have the 40 Chemistry Questions you can expect to see in your 2026 JAMB examination. Read them again and again. Ensure that you get very familiar with each of them to the extent that you can readily recognize them any time. JAMB is a very serious examination and a lot depend on it. You will answer 40 questions in JAMB Chemistry 2026 within 26 minutes. So it’s important that you pay attention to the information revealed on this page.
Remember that you can ask for more detailed explanation to any of the above questions in case you don’t fully understand it. Don’t be shy, just scroll down and use the comments section. Drop your questions and expect comprehensive answers as soon as possible.
More so, you can help us to reach others with this post by sharing it with friends on Social Media. Just scroll down to see the Facebook and Twitter and WhatsApp buttons. Thank you so much!
See you on the next article.
Read Also: Check Your JAMB Result on this Portal
Still Got a Question? Drop Your Question Right HERE 👇👇 and click on Search. Get an Immediate Response...
Get in touch with us
Join our FREE 2026 JAMB, WAEC, NECO and BECE Tutorial Classes here: Youtube (Subscribe to the channel)
This is for JSCE, Science and Art Students
If this post was helpful to you, please help us to reach others by sharing with the buttons below!
