Prep Africa
Menu

Exams

JAMBKCSENECTANSCWAEC

Resources

InteractiveSearchTimetables 2026Syllabus 2026About

WAEC Chemistry – Nigeria

AI-generated exam-style practice tailored for Nigeria students.

Interactive mode

Practice mode

Answer immediately. If you miss, we show exactly why your selected option is wrong.

Progress: 0/10 correct (0 answered)

Question 271

In a chemical reaction, increasing the temperature generally affects the rate of reaction by:
Rates of reactions (kinetics)Rates of reactionseasy

Select one option to submit your answer.

Question 272

Which of these is a property of a base according to the Arrhenius definition?
Acids, bases, saltsAcids, bases, saltseasy

Select one option to submit your answer.

Question 273

What is the monomer unit of polyethylene, a common polymer?
Polymer chemistryPolymer chemistrymedium

Select one option to submit your answer.

Question 274

Which gas is primarily responsible for the greenhouse effect and global warming?
Environmental chemistryEnvironmental chemistryeasy

Select one option to submit your answer.

Question 275

What is the electronic configuration of the oxide ion (O²⁻)?
Structure and properties of matterAtomic Structure and Quantum Numbersmedium

Select one option to submit your answer.

Question 276

In a reversible reaction at equilibrium, what happens if the concentration of reactants is increased?
EquilibriumChemical Equilibriummedium

Select one option to submit your answer.

Question 277

In a redox reaction, what happens at the cathode in an electrochemical cell?
ElectrochemistryElectrochemistrymedium

Select one option to submit your answer.

Question 278

Which of the following is a characteristic of addition polymerization?
Polymer chemistryPolymer Chemistrymedium

Select one option to submit your answer.

Question 279

Calculate the mass of carbon dioxide produced when 44g of propane (C₃H₈) is completely combusted.
Calculation chemistry (stoichiometry)Stoichiometryhard

Select one option to submit your answer.

Question 280

Which property is characteristic of a covalent molecular solid?
Structure and properties of matterStructure and properties of mattermedium

Select one option to submit your answer.

We use cookies and similar technologies for analytics and advertising. You can accept or reject non-essential cookies.