Verified 2023 JAMB Chemistry Questions and Answers is out. See Chemistry JAMB answers and how to score high in JAMB Chemistry Examination. you’ll be acquainted with Joint Admission and Matriculation Board (JAMB) 2023 Chemistry, the repeated questions and how to answer them. Continue with this article to see all JAMB expo on Chemistry subject.
The Joint Admissions and Matriculation Board is an entrance examination gaining admission into tertiary-level institutions in Nigeria. JAMB is saddled with the responsibility of conducting the Unified Tertiary Matriculation Examination and scoring candidates according to their chosen course of study.
This article will not only provide you with real JAMB Chemistry questions, but will also guide you on how to score High mark in it.
In this article, we will be showing this year Chemistry expo as well as JAMB Chemistry past questions and answers pdf for free.
We understand that the 2023 Chemistry question and answer will not be the same for all candidate. You have nothing to worry. The expo will cover for different sections or time difference. All you need do is to keep refreshing this page.
JAMB Chemistry Sample Questions and Answers For CBT exams (Expo)
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Chemistry
1..An isotope has an atomic number of 15 and mass number of 31..The proton it contain is A..16 B..15 C..31 D..46
2. Calculate the volume in cm³ of oxygen evolved at s.t.p. when a current of 5A is passed through acidified water for 1..(Molar volume of gas at STP =22.4DM³ A..0.056 B..0.224 C..224.000 D..56.0000
3. The sulphide used in coating electric fluorescent tubes is A)iron(II) sulphide B)sphalerite C)zinc sulphide D) sulphide mineral
4. Hydrogenation of Benzene to Cyclohexane A. Cracking B. Polymerisation C. Reforming D. Aromatization
5. If the half life of a particle is 4.5 how long will it decay 3/4 of its mass.
6. BaS04 is A)soluble salt B)insoluble salt C)neutral salt D)basic sat
7. The gas that can best be collected by downward displacement of air is A. Ammonia B. Carbon (iV) oxide C. Chlorine D. Sulphur (iV) oxide
8. The pollutant that contributes to the depletion of the ozone layer is
a)CFCs B)CFs C)CFS D)CFC
9. What changes sodium pellets to liquid a. Oxygen b. Water vapour c. Carbon(Iv) oxide d. Nitrogen
10. The compound used as “antifreeze” in car radiators in cold regions of the world is A. Ethanol B. Ethylene glycol C. Ethanal D. Propane-1, 2-diol
11. The PH of 0.001dm³ of HCl is ???
12. What are the laws that form the general gas equation A. Boyle and Charles B. Boyle’s, Charles and Graham C. Boyle’s only D. Charles and Graham
13. Chlorine, bromine, and iodine resembles each other in that all A. Dissolves in alkalis B. Displace each other from solution of their salts C. React violently with hydrogen with heating
14. What changes sodium pellets to liquid a. Oxygen b. Water vapour c. Carbon(Iv) oxide d. Nitrogen
15. The method suitable for separating suspended particles in liquid is….? A. Decantation B. Distillation C. Centrifugation
16. A hydrocarbon X has molar mass 26 carban Atoms 96% what is it’s molecular formula A. C2H2 B. C2H6 C. CH4 D. C3H8
17. Silica gel when exposed to air turns liquid what kind of substance is it A) delinquency B)hygroscopic C) efflorescence
18. In an equilibrium reaction, which of the following conditions indicate the maximum yield of the product will be obtained A. Equilibrium constant is very large B. ∆H – T∆S C. ∆H > T∆S D. Equilibrium constant is less than zero
19. Under high pressure,real gases do not obey gas laws because their molecules? a.Have become more energetic b.Have become less energetic c.Have become smaller in size d.Decompose into atoms
20. Which of the following has the highest-octane number? A. Straight chain aliphatic compound B. Branched chain aliphatic compound C. Aromatic compound D. Cyclic aliphatic compound
More coming ✅
The questions below are past JAMB exam questions on Chemistry. Use them for practice purpose. The main answers will be posted here 2 hours before it start. Make sure you keep refreshing this page for your own good.
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JAMB Past Chemistry Answers
- A circulatory system that does not allow mixing of oxygenated blood in the mammalian heart is referred to as
- open
- haemocoelic
- single
- closed
ANSWER: D (closed)
2 In a pyramid of numbers, it is common to have with the smallest of individual
- secondary consumers
- tertiary consumers
- primary consumers
- primary producers
ANSWER: B (tertiary consumers)
- One of these animal groups contain acoelomate member
- Mollusca
- Coelenterata
- Arthropoda
- reptilian
ANSWER: B (Coelenterata)
Tips For Answering Jamb Chemistry Questions
- Be time conscious and do not waste your time on any question you do not understand. You can always come back to attempt them.
- It is important you familiarize yourself with the exam format. Get Chemistry past and answers and do extensive reading with it
- When answering or attempting any question, take your time and make sure you understand the question asked.
- Get Chemistry test book and make your own note when reading. Do not skip any thing.
- It is important you read inline with the JAMB Chemistry syllabus
- Memorize all you have ready before the day of the exam and avoid necessary pressure
- Do not waste so much time on any question. Manage your time effectively, allocate time to each question and any one you do not understand skip it.
- Make sure you provide answer to all the questions, double check your work at the end before clicking the submit button.
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