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NECTA 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 dynamic chemical equilibrium, which statement is true?
Rates and equilibrium8.1 Chemical equilibriumhard

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Question 172

Which type of hybridization is present in methane (CH₄)?
Atomic structure1.3 Atomic orbitals and hybridizationhard

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Question 173

What is the atomic number of an element that has 11 protons, 11 electrons, and 12 neutrons?
Atomic structure1. Atomic structureeasy

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Question 174

Which type of chemical bond is formed by the sharing of electrons between two non-metal atoms?
Chemical bonding2. Chemical bondingeasy

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Question 175

How many moles are present in 22 grams of carbon dioxide (CO2)? (Atomic masses: C=12, O=16)
Mole concept3. Mole conceptmedium

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Question 176

Identify the functional group present in an alcohol.
Organic chemistry6. Organic chemistryeasy

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Question 177

What happens to the rate of a chemical reaction when the concentration of reactants is increased?
Rates and equilibrium7. Rates and equilibriummedium

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Question 178

Which orbital shape corresponds to p orbitals in atomic structure?
Atomic structure1. Atomic structuremedium

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Question 179

Which of the following organic compounds is classified as a ketone?
Organic chemistry6. Organic chemistryhard

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Question 180

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

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