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NECTA ChemistryTanzania

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Question 101

Which of the following statements about equilibrium is true?
Rates and equilibriumChemical Equilibriumhard

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Question 102

Which atom in an organic molecule is most likely to form a double bond?
Organic chemistryChemical Bonding in Organic Moleculeshard

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Question 103

What is the oxidation state of sulfur in sulfuric acid (H₂SO₄)?
Chemical bondingOxidation Stateshard

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Question 104

What is the atomic number of an element with 12 protons and 12 neutrons?
Atomic structureAtomic Structureeasy

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Question 105

If 0.5 moles of a substance contain 3.01 x 10^23 particles, how many particles are there in 1 mole of the substance?
Mole conceptMole Conceptmedium

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Question 106

Which of the following solutions has the highest concentration of H+ ions?
Acids, bases, saltsAcids and Baseseasy

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Question 107

How does increasing temperature affect the rate of a chemical reaction?
Rates and equilibriumRates of Reactionmedium

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Question 108

Which statement best describes dynamic equilibrium in a reversible chemical reaction?
Rates and equilibriumChemical Equilibriummedium

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Question 109

Which of the following species has the highest electronegativity?
Atomic structurePeriodic Propertieshard

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Question 110

In organic chemistry, what is the process called when an alkene is converted to an alkane?
Organic chemistryReactions of Alkeneshard

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