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WAEC Chemistry AI Practice

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

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Question 171

In a chemical equilibrium, what happens if the concentration of a reactant is increased?
EquilibriumEquilibriummedium

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Question 172

In the reaction Zn + Cu^2+ → Zn^2+ + Cu, which species is oxidized?
Redox reactionsRedox reactionsmedium

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Question 173

Which organic compound contains a carbonyl group bonded to at least one hydrogen atom?
Organic chemistryOrganic chemistrymedium

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Question 174

Which of the following quantum numbers describes the shape of an electron's orbital?
Atomic structure and quantum numbersAtomic structure and quantum numberseasy

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Question 175

Which of the following explains why metals generally have high melting points?
Structure and properties of matterStructure and properties of mattermedium

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Question 176

Which factor does NOT increase the rate of a chemical reaction?
Rates of reactions (kinetics)Rates of reactionseasy

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Question 177

What is the pH of a solution with a hydrogen ion concentration of 1.0 × 10^-3 mol/dm³?
Acids, bases, saltsAcids, bases, saltseasy

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Question 178

In a redox reaction, what happens to the substance that is oxidized?
Redox reactionsRedox reactionseasy

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Question 179

Which of the following is the main purpose of an electrochemical cell?
ElectrochemistryElectrochemistrymedium

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Question 180

What type of polymerization involves the repeated addition of monomers with double bonds without the loss of small molecules?
Polymer chemistryPolymer chemistrymedium

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