WorksheetsRedox Reactions Quiz
Total questions: 13
Worksheet time: 7mins
What is the primary focus of redox reactions?
Synthesis of metals
Formation of acids
Electron transfer processes
Combustion of fuels
Which of the following is a characteristic of oxidation?
Addition of hydrogen
Loss of hydrogen
Reduction of electronegative elements
Gain of electrons
What does the term 'reductant' refer to?
A substance that gains electrons
A substance that loses electrons
A substance that is oxidized
A substance that is reduced
In the reaction 2Mg + O2 → 2MgO, what is being oxidized?
Magnesium
Oxygen
Magnesium oxide
None of the above
What is the oxidation number of oxygen in most compounds?
-1
-2
0
+1
Which of the following reactions is a redox reaction?
CaCO3 → CaO + CO2
NaCl → Na + Cl2
H2 + Cl2 → 2HCl
H2O → H2 + O2
What is the role of an oxidizing agent?
To donate electrons
To accept electrons
To increase oxidation number
To decrease oxidation number
In the reaction Zn + Cu2+ → Zn2+ + Cu, which species is reduced?
Zinc
None of the above
Copper ion
Copper metal
What type of reaction is represented by 2Na + Cl2 → 2NaCl?
Combination
Decomposition
Displacement
Redox
Which of the following is NOT a type of redox reaction?
Neutralization reactions
Displacement reactions
Decomposition reactions
Combination reactions
What happens to the oxidation number of sulfur in the reaction 2Cu2O + Cu2S → 6Cu + SO2?
It becomes zero
It remains the same
It decreases
It increases
Which of the following statements is true about redox reactions?
Oxidation and reduction occur simultaneously
Oxidation involves gain of electrons
Oxidation and reduction occur independently
Reduction involves loss of electrons
In the reaction 2H2 + O2 → 2H2O, what is the oxidation state of hydrogen in water?
+1
+2
0
-1
