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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 221

At equilibrium, what is true about the rate of the forward and reverse reactions?
EquilibriumEquilibriumeasy

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Question 222

Which of these is a strong acid?
Acids, bases, saltsAcids, bases, saltseasy

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Question 223

In a redox reaction, what happens to the species that is oxidized?
Redox reactionsRedox reactionsmedium

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Question 224

Which of the following is an example of a polymer?
Polymer chemistryPolymer chemistryeasy

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Question 225

If 2 moles of hydrogen gas react with 1 mole of oxygen gas, how many moles of water are formed according to the equation 2H2 + O2 → 2H2O?
Calculation chemistry (stoichiometry)Calculation chemistrymedium

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Question 226

Which of these is a characteristic of a strong acid?
Acids, bases, saltsAcids, bases, saltseasy

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Question 227

Which of the following is the monomer unit of nylon-6,6 polymer?
Polymer chemistryPolymer chemistryhard

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Question 228

How many moles of oxygen gas (O2) are needed to completely react with 2 moles of propane (C3H8) according to the equation: C3H8 + 5O2 → 3CO2 + 4H2O?
Calculation chemistry (stoichiometry)Calculation chemistryhard

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Question 229

Which of the following is a property of solids due to their definite shape and volume?
Structure and properties of matterStructure and properties of mattereasy

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Question 230

Why does atomic radius generally decrease across a period in the Periodic Table?
PeriodicityPeriodicitymedium

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