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WAEC Chemistry – Nigeria

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Question 31

Which element has the highest electronegativity in the periodic table?
PeriodicityPeriodicitymedium

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Question 32

How does increasing temperature generally affect the rate of a chemical reaction?
Rates of reactions (kinetics)Rates of reactionsmedium

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Question 33

During a redox reaction, the species that loses electrons is called the:
Redox reactionsRedox reactionsmedium

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Question 34

What is the main industrial use of the Haber process?
Industrial chemistryIndustrial chemistrymedium

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Question 35

Which polymer is produced by the polymerization of ethene?
Polymer chemistryPolymer chemistryhard

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Question 36

Which allotrope of carbon has a structure consisting of layers of hexagonal rings?
Structure and properties of matterStructure and properties of mattermedium

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Question 37

Across a period in the periodic table, atomic radius generally:
PeriodicityPeriodicityeasy

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Question 38

In a chemical reaction, the rate is increased by:
Rates of reactions (kinetics)Kineticsmedium

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Question 39

At equilibrium in a reversible reaction, the rate of the forward reaction is:
EquilibriumEquilibriumeasy

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Question 40

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

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