JAMB Chemistry questions are simple to answer if you pay close attention to some important chemistry topics. There are some topics in the UTME chemistry syllabus that appear frequently in JAMB questions.

On this page, I will list the topics to which every JAMB UTME chemistry candidate should pay close attention.
JAMB Chemistry Expected Topics Separating Techniques
How to Find an Empirical Formula
Equation balancing
Salt, Acid, and Base (Physical and Chemical properties, Neutralization rxn)
The PH Scale
Isotopes
Configuration of electronic devices
The Gas Law
The redox reaction
Chemical reaction rate (Le Chatelier’s principle)
Carbon and its derivatives
Hydrogen and its compound Nitrogen, as well as Sulphur and its compound
Allotropes
Hydrocarbons with aromatic and aliphatic rings (Alkane, Alkene, Akyne, Benzene)
Isomerism
Alkanol \sAlkanoic \sEsterification
Water hardness Saponification
The preceding topics are classified as organic, physical, and industrial chemistry.
Many students believe that chemistry is volatile, which is why you must adequately prepare to score above 70 on it.
It is critical that you are familiar with the chemical properties, physical properties, and laboratory preparation of nos. 11–14. The naming of hydrocarbons and their differences, as well as the balancing of redox reactions, are all equally important. I’ve discovered that candidates who pay close attention to these chemistry topics always do well on the exam.
JAMB Chemistry Exam Questions and Answers
(1) An organic compound is composed of 60% carbon, 13.3% hydrogen, and 26.7 percent oxygen. Determine the empirical formula.

C6H13O2 (A)

C4H9O (B)

C5H12O (C5H12O) (C5H12O) (C5H

C3H8O (D)

[C = 12, H = 1, O = 16] Formalized formalized formalized formalized formalized formalized formalized formalized formal

D is the correct answer.

(2) The reaction of ammonia and ethyl ethanoate results in

Ethanol and propanamide (A)

Ethanol and ethanamide (B)

Propanol and ethanamide (C)

Propanol (D) and propanamide

B is the correct answer.

(2) An example of an is 2-methylbutan-2-ol.

Tertiary alkanol (B)

dihydric alkanol (C)

(D) alkanol primary

B is the correct answer.

(4) Using the technique of fractionation, chlorophyll obtained from green plant leaves can be composed of more than one colored component.

crystallization (A)

hydrolysis (B)

(C) chromatography

sublimation (D)

C is the correct answer.

(5) The color of the water in the fountain is

A. cyan Orange B. D. yellow C. red

C is the correct answer.

(6) Permanent water hardness can be removed by

Filtration (A)

(B) the addition of slaked lime

(C) the addition of caustic soda

(D) it is boiling.

B is the correct answer.

(7) A solution that, when treated with hydrochloric acid, emits a colorless, odorless gas that turns lime water milky is most likely a solution.

trioxocarbonate (A) (IV)

trioxonitrate (B) (V)

(B) trioxonitrate(V)

(C) hydroxide

(D) chloride

Answer – A

(8) If chlorine is bubbled into water and the resulting yellowish-green solution is exposed to bright sunlight for a while, the solution will decompose giving out

(A) oxygen, thereby producing hypochlorous

(B) chlorine and oxygen

(C) oxygen and leaving behind aqueous hydrochloric acid

(D) oxygen, hydrogen and chlorine

Answer – C

(9) H3PO4(aq)+ H2O(l) → H2PO4–(aq) + H3O+(aq)

∆H = –13kJ at 298K

In the reaction above, an increase in temperature would

(A) have no effect on the reaction

(B) slow down the reverse reaction

(C) favour the forward reaction

(D)favour the reverse reaction

Answer – D

(10) Sulphur (IV) oxide bleaches by

(A) hydration (B) reduction (C) absorption (D) oxidation

Answer B

(11) Which of the following gases can be collected by the method of downward delivery?

(A) Oxygen (B) Hydrogen (C) Chlorine (D) Ammonia.

Answer – C

(12) Milikan’s contribution to the development of atomic theory is the
determination of

(A) charge on electron (B) positive rays (C) charge to mass ratio (D) cathode rays

Answer A

(13) What current in amperes will deposit 2.7g of alluminium in 2 hours? (A) 32 (B) 8 (C) 4 (D) 16

Answer C

(14) Ethanoic acid is

(A) tribasic (B) unionizeable (C) monobasic (D) dibasic

Answer C

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