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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 181

One mole of a substance contains how many particles?
Mole conceptMole concepteasy

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Question 182

In an electrolytic cell, the electrode where oxidation occurs is called the:
ElectrochemistryElectrochemistrymedium

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Question 183

What is the effect of increasing concentration of reactants on the rate of a chemical reaction, assuming other conditions are constant?
Rates and equilibriumRates and equilibriummedium

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Question 184

In a chemical equilibrium, what happens when the temperature is increased for an exothermic reaction?
Rates and equilibriumRates and equilibriumhard

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Question 185

Calculate the number of moles in 22 grams of carbon dioxide (CO2). (Molar mass of CO2 = 44 g/mol)
Mole conceptMole concepteasy

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Question 186

Which of the following is a strong acid?
Acids, bases, saltsAcids and basesmedium

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Question 187

Which factor will NOT increase the rate of a chemical reaction?
Rates and equilibriumRates of reactionmedium

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Question 188

Which particle has the least mass among the following?
Atomic structureAtomic structureeasy

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Question 189

How many molecules are there in 2 moles of water (H₂O)?
Mole conceptMole concepteasy

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Question 190

In a chemical equilibrium, what happens to the concentrations of reactants and products?
Rates and equilibriumRates and equilibriummedium

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