Question 131
In an electrochemical cell, oxidation occurs at which electrode?ElectrochemistryElectrochemistrymedium
Select one option to submit your answer.
NECTA Chemistry – Tanzania
AI-generated exam-style practice tailored for Tanzania students.
Practice mode
Answer immediately. If you miss, we show exactly why your selected option is wrong.
Progress: 0/10 correct (0 answered)
Question 132
In a reversible reaction at equilibrium, what happens if the concentration of a reactant is increased?Rates and equilibriumRates and equilibriumhard
Select one option to submit your answer.
Question 133
What is the correct molecular formula for ethanoic acid?Organic chemistryOrganic chemistrymedium
Select one option to submit your answer.
Question 134
Which particle has the least mass in an atom?Atomic structureAtomic structureeasy
Select one option to submit your answer.
Question 135
What is the atomic number of an element with 17 protons, 18 neutrons, and 17 electrons?Atomic structureAtomic structureeasy
Select one option to submit your answer.
Question 136
Which type of chemical bond is formed when electrons are shared between two atoms?Chemical bondingChemical bondingeasy
Select one option to submit your answer.
Question 137
Calculate the number of moles in 44 g of CO₂ (molar mass = 44 g/mol).Mole conceptMole concepteasy
Select one option to submit your answer.
Question 138
In an electrochemical cell, which electrode does oxidation occur?ElectrochemistryElectrochemistrymedium
Select one option to submit your answer.
Question 139
What is the equilibrium expression Kc for the reaction: N₂ + 3H₂ ⇌ 2NH₃?Rates and equilibriumRates and equilibriumhard
Select one option to submit your answer.
Question 140
Which of the following is a primary alkanol?Organic chemistryOrganic chemistryhard
Select one option to submit your answer.