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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 31

How many molecules are present in 2 moles of oxygen gas (O2)?
Mole conceptMole concepteasy

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Question 32

In an electrochemical cell, which electrode does oxidation occur at?
ElectrochemistryElectrochemistrymedium

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Question 33

According to the rate equation rate = k[A]^2[B], what is the order of reaction with respect to A?
Rates and equilibriumRates and equilibriummedium

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Question 34

What happens to the position of equilibrium when the concentration of a reactant is increased?
Rates and equilibriumRates and equilibriumhard

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Question 35

Which type of hybridization is present in the carbon atoms of ethene (C2H4)?
Organic chemistryOrganic chemistryhard

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Question 36

In the formation of sodium chloride (NaCl), what happens to the sodium atom?
Chemical bondingChemical bondingmedium

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Question 37

What is the charge and location of an electron in an atom?
Atomic structureAtomic Structureeasy

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Question 38

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

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Question 39

Which of the following is a homologous series in organic chemistry?
Organic chemistryOrganic Chemistrymedium

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Question 40

In the reaction N2 + 3H2 ⇌ 2NH3, what happens if the pressure is increased?
Rates and equilibriumRates and Equilibriumhard

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