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NECTA 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 121

Which type of bond is formed by the electrostatic attraction between oppositely charged ions?
Chemical bondingChemical Bondingmedium

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Question 122

In an electrochemical cell, what is the electrode where oxidation takes place?
ElectrochemistryElectrochemistrymedium

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Question 123

Which organic compound contains the functional group -OH?
Organic chemistryOrganic chemistryeasy

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Question 124

How does increasing temperature generally affect the rate of a chemical reaction?
Rates and equilibriumRates and equilibriummedium

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Question 125

At equilibrium, which of the following is true about the forward and reverse reaction rates?
Rates and equilibriumRates and equilibriummedium

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Question 126

Which electron configuration represents the ground state of a nitrogen atom?
Atomic structureAtomic structuremedium

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Question 127

Which principle explains the direction of spontaneous redox reactions in electrochemistry?
ElectrochemistryElectrochemistryhard

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Question 128

What is the number of protons in the nucleus of an atom of oxygen-16?
Atomic structureAtomic structureeasy

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Question 129

Calculate the number of moles in 88 grams of carbon dioxide (CO2). (Atomic masses: C=12, O=16)
Mole conceptMole conceptmedium

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Question 130

Which of the following solutions will turn blue litmus paper red?
Acids, bases, saltsAcids, bases, saltseasy

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