Chemistry JAMB Questions and Answers 2024 [Revealed!]

This is for UTME Candidates looking for JAMB Chemistry Questions and Answers 2024. Especially for those aspiring for Medicine, Pharmacy and other Health Science courses, including Engineering and Physical Sciences aspirants. Here you will get genuine Chemistry JAMB questions and answers for 2024. Your duty now is to read through them as many times as possible and get ready to smash your Chemistry paper.

What are JAMB Chemistry Questions and Answers 2024

JAMB Chemistry Questions and Answers 2024 are the questions you should expect in your Chemistry paper in 2024 UTME, together with their answers.

It is very important that every candidate preparing to sit for Chemistry in the forthcoming 2024 JAMB examination should catch a glimpse of these questions.

In so doing, they will know what to expect in the JAMB CBT hall. Knowing exactly what to expect will boost their confidence and guarantee them a very high score.

JAMB Chemistry Questions and Answers 2024 Revealed!

On this page, we shall reveal JAMB Chemistry Questions and Answers 2024 for all candidates taking the Chemistry paper.

How lucky you are to stumble upon this important page!

The questions are genuine and the answers are accurate, and all are a product of our passion to see you excel in your JAMB and gain admission at last.

In the following sections, you will read the Chemistry questions you are to expect in your 2024 JAMB exam as well as their answers. You can use the comments section if you still need clarification over some of the questions. We will give you a more detailed explanation.

JAMB is a very serious examination. You will answer 40 questions in JAMB Chemistry 2024 within 26 minutes. So it’s important that you pay attention to the information revealed on this page.

JAMB Chemistry Questions and Answers 2024 [Numbers 1 – 10]

1. 2Al_(s) + 2NaOH_(aq) + 6H₂O_(l)  →   2NaAl(OH)_4(aq) + 3H_2(g)
From the equation, give the condition of reaction
A. cold dil. NaOH
B. hot concentrated NaOH
C. warm dilute NaOH
D. hot dilute NaOH

2. In an experiment, 5.00g of a metal gave 10.59g of its chloride. In another experiment, 1.50g of the same metal combined with 1.68g of chlorine. The above data illustrates the
A. Law of Conservation of Mass
B. Law of Definite Proportion
C. Law of Multiple Proportion
D. Gay Lussac’s Law

3. The pollution from petroleum spillage in rivers and lakes can best be dispersed by
A. pouring detergents
B. passing of ships through the sea
C. pouring organic solvents
D. evaporation

4. Which of the following is not a colloidal sol?
A. harmattan haze
B. fog
C. flood water
D. gelatinous precipitate

5. The fourteen elements (atomic number 90 – 103) after actinium are called?
A. Actinoids
B. Nucleotides
C. Pre-actinum elements
D. Atomic elements

6. To obtain pure carbon(ii) oxide from its mixture with carbon(iv) oxide, the mixture should be?
A. Passed over heated copper(ii) oxide
B. Bubbled through water
C. Bubbled through conc. H₂SO₄
D. Bubbled through conc. NaOH

7. 32g of anhydrous copper(II) tetraoxosulphate(VI) dissolved in 1dm³ of water generated 13.0kJ of heat. The heat solution is?
A. 26.0kJ/mol         B. 65.0kJ/mol
C. 130.0kJ/mol       D. 260.0kJ/mol

8. Consider the reaction
A_(s) + 2B_(g) → 2C_(aq) + D_(g)
What will be the effect of a decrease in pressure on the reaction?
A. The equilibrium will shift
B. Rate of forward reaction will increase
C. Rate of backward reaction will increase
D. Rates of forward and backward reaction are not affected

9. Which of the compounds is composed of Al, Si, O and H?
A. Epson salt   B. Limestone
C. Clay            D. Urea

10. Ethanol and dimethyl ether are examples of
A. compounds that exhibit positional isomerism
B. compounds that exhibit functional group isomerism
C. compounds that exhibit chain isomerism
D. compounds that exhibit tautomerism

Answers to Chemistry Question Number 1 – 10

1.A   2.B   3.A   4.A   5.A
6.D   7.B   8.C   9.C  10.B

JAMB Chemistry Questions and Answers 2024 [Numbers 11 – 20]

11. Which of the following is false about the pH of a solution?
A. increasing the pH increases the acidity of the solution
B. decreasing the pH increases the acidity of the solution
C. increasing the pH increases the basicity of the solution
D. decreasing the pH increases the hydrogen ion concentration of the solution

12. An alkanoic acid has a molar mass of 102 g. Derive its molecular formula and hence name the acid
A. propanoic acid
B. butanoic acid
C. pentanoic acid
D. hexanoic acid

13. The gasification of coke is used for the manufacture of
A. natural gas
B. producer gas
C. synthetic gas
D. industrial gas

14. The ionic radii of metals are usually
A. greater than their atomic radii
B. unaffected by the charge on the ion
C. the same as their atomic radii
D. less than their atomic radii

15. The maximum number of electrons that can be accommodated in the shell having the principal quantum number 3 is
A. 3         B. 9
C. 10       D. 18

16. The electronic configuration of Mg²⁺ is
A. 1s² 2s² 2P⁶ 3s² 3P²
B. 1s² 2s² 2P⁶
C. ls² 2s² 2p⁶ 3s²
D. ls² 2s² 2P⁴

17. Aluminium containers are frequently used to transport trioxonitrate(V) acid because aluminium
A. has a silvery-white appearance
B. has a low density
C. does not react with the acid
D. does not corrode

18. In the redox reaction
2Fe²⁺ + Cl₂ → 2Fe³⁺ + 2Cl^–
A. Cl₂ is reduced because it has lost electrons
B. Cl₂ is reduced because its oxidation number has decreased
C. Fe²⁺ is reduced because it has lost electrons
D. Fe²⁺ is reduced because it has gained electrons

19. During electrolysis of molten sodium chloride,
A. chlorine atom gains an electron
B. chloride ion gains an electron
C. chloride ion is oxidized
D. sodium ion is oxidized

20. Coffee stains are removed with
A. turpentine          B. ammonia
C. borax in water    D. kerosene

Answers to Chemistry Question Number 11 – 20

11.A   12.C   13.C   14.D   15.D
16.D   17.C   18.B   19.C   20.C

JAMB Chemistry Questions and Answers 2024 [Numbers 21 – 30]

21. Which of the following statements explains why tetraoxosulphate(VI) acid is regarded as a strong acid?
A. The acid is concentrated
B. The acid is highly corrosive
C. The acid is completely ionized
D. Tetraoxosulphate(IV) ions are very reactive

22. Which of the following is not the characteristic of glucose and fructose?
A. They are structural isomers
B. They reduce Fehling’s solution
C. They can be obtained by the hydrolysis of starch
D. They are readily fermented by enzymes

23. Which of the following is normally used for drying ammonia gas?
A. Concentrated tetraoxosulphate(VI) acid
B. Calcium oxide
C. Anhydrous calcium chloride
D. Phosphorus(V) oxide

24. Nuclear reactions can be used in the following except
A. gauging the thickness of objects
B. making atomic bombs
C. generating electricity
D. purifying water

25. The following metals are extracted by the electrolytic method except
A. Potassium         B. Tin
C. Calcium            D. Magnesium

26. PMS (petrol) can be obtained from AGO (diesel) by
A. distillation       B. cracking
C. catalysis         D. polymerization

27. The separation of a mixture of calcium trioxocarbonate(IV) and sodium trioxocarbonate (IV) is most easily carried out by using the differences in their
A. physical states
B. melting points
C. solubility
D. boiling points

28. What is the amount (in mole) of sodium trioxocarbonate(IV) in 5.3g of compound? (Na = 23; C = 12; O = 6)
A. 0.05       B. 0.10
C. 0.50       D. 0.20

29. Brass is an alloy of
A. Copper and Iron
B. Copper and Chromium
C. Copper and Zinc
D. Copper and Magnesium

30. The products of the electrolysis of dilute sodium chloride solution with platinum electrodes are
A. hydrogen and oxygen
B. oxygen and chlorine
C. oxygen and water
D. chlorine and water

Answers to Chemistry Question Number 21 – 30

21.C   22.C   23.B   24.D   25.B
26.B   27.C   28.A   29.C   30.A

JAMB Chemistry Questions and Answers 2024 [Numbers 31 – 40]

31. When starch undergoes complete enzyme-catalyzed hydrolysis, the resulting product is
A. glucose         B. maltose
C. sucrose         D. fructose

32. Which of the following is not a direct petroleum product?
A. Ethanol         B. Methane
C. Vaseline        D. Kerosene

33. Which of the following properties is not a characteristic of electrovalent compounds?
A. Formation of crystalline solids
B. Solubility in polar solvents
C. High vapour pressures
D. High melting and boiling points

34. Compounds that have the same molecular formula but different structures are said to be
A. allotropic         B. polymeric
C. isomeric          D. isotopic

35. Water from a river contaminated by sodium hydroxide waste will have a pH of about
A. 1         B. 3
C. 7         D. 9

36. Which of the following is suitable for determining different isotopes present in an element which exhibits isotopy?
A. Isotope Counter
B. Cathode Ray Tube
C. Mass Spectrometer
D. Geiger Muller Counter

37. When iron rusts, it undergoes
A. deliquescence
B. chemical decomposition
C. hydrolysis
D. redox reaction

38. When sucrose is warmed with Fehling’s solution
A. the solution turns milky
B. a brick-red precipitate is formed
C. there is no precipitate
D. a blue-black coloration is produced

39. Which of the following minerals contains fluorine as one of its constituent elements?
A. Cryolite         B. Bauxite
C. Kaolin           D. Mica

40. Which of the following pieces of apparatus can be used for drawing a current of air through a liquid?
A. Wash bottle      B. Aspirator
C. Pipette             D. Capillary tube

Answers to Chemistry Question Number 31 – 40

31.A 32.A 33.C 34.C 35.D 36.C 37.D 38.C 39.A 40.A

Read Also: 20 JAMB Most Repeated Topics in Chemistry Exams 2024

Conclusion

So here you have the 40 Chemistry Questions you can expect in your 2024 JAMB examination. Read them again and again. Ensure that you get very familiar with each of them such that you can readily recognize them any time.

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Read Also: JAMB UTME Result Checker Portal Login 2024 | Check JAMB Result