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WAEC Chemistry AI Practice

Train with AI-generated exam-style questions. Get instant explanations and coaching on every weak area.

Note: Diagram-based questions are coming soon. WAEC Biology Paper includes ~5 diagram questions.

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Question 81

What type of bond is formed when electrons are shared unequally between two atoms?
Chemical bondingChemical bondingeasy

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Question 82

Which property is characteristic of ionic compounds?
Structure and properties of matterStructure and properties of mattermedium

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Question 83

Which element has the greatest first ionization energy?
PeriodicityPeriodicitymedium

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Question 84

In the equilibrium reaction N2 + 3H2 ⇌ 2NH3, what happens to the position of equilibrium if the pressure is increased?
EquilibriumEquilibriummedium

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Question 85

Which polymer is formed by the polymerization of ethene (ethylene) monomers?
Polymer chemistryPolymer chemistrymedium

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Question 86

What is the empirical formula of a compound containing 40% carbon, 6.7% hydrogen, and 53.3% oxygen by mass?
Calculation chemistry (stoichiometry)Calculation chemistryhard

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Question 87

Which allotrope of carbon has a three-dimensional network structure that makes it extremely hard?
Structure and properties of matterStructure and properties of mattermedium

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Question 88

What effect does increasing the concentration of reactants generally have on the rate of a chemical reaction?
Rates of reactions (kinetics)Rates of reactionseasy

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Question 89

In a reversible reaction at equilibrium, what happens when the temperature is increased?
EquilibriumChemical equilibriummedium

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Question 90

Which polymer is formed from the monomer ethene through addition polymerization?
Polymer chemistryPolymer chemistrymedium

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