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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 71

In the equilibrium reaction N2(g) + 3H2(g) ⇌ 2NH3(g), what happens if pressure is increased?
Rates and equilibriumRates and equilibriumhard

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Question 72

What is the main reason metals conduct electricity?
Chemical bondingChemical bondinghard

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Question 73

Which subatomic particle has a positive charge?
Atomic structureAtomic structureeasy

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Question 74

What type of bond is formed by the sharing of electrons between atoms?
Chemical bondingChemical bondingeasy

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Question 75

Calculate the number of moles in 18g of water (H2O). (Molar mass of H2O = 18g/mol)
Mole conceptMole concepteasy

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Question 76

Which functional group is present in aldehydes?
Organic chemistryOrganic chemistrymedium

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Question 77

Which factor generally increases the rate of a chemical reaction?
Rates and equilibriumRates and equilibriummedium

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Question 78

What is the equilibrium constant expression (Kc) for the reaction: N2 + 3H2 ⇌ 2NH3?
Rates and equilibriumRates and equilibriumhard

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Question 79

Which type of chemical bond is mainly responsible for the structure of diamond?
Chemical bondingChemical bondinghard

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Question 80

What volume will 2 moles of an ideal gas occupy at STP (Standard Temperature and Pressure)? (1 mole at STP = 22.4 L)
Mole conceptMole conceptmedium

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