How is the reaction Zn + CuSO₄ → ZnSO₄ + Cu most accurately classified?
Answer and explanation
Correct answer: A displacement as well as a redox reaction
This reaction is a single-displacement reaction because zinc, being more reactive than copper, replaces copper from copper sulphate: Zn + CuSO₄ → ZnSO₄ + Cu. It is also a redox reaction: Zn changes from oxidation state 0 to +2 and is oxidised, while Cu²⁺ changes to Cu and is reduced. Hence A is the most complete classification. It is not combination, thermal decomposition, or double displacement.
Frequently asked questions
What is the correct answer to this question?
A displacement as well as a redox reaction
Why is this the correct answer?
This reaction is a single-displacement reaction because zinc, being more reactive than copper, replaces copper from copper sulphate: Zn + CuSO₄ → ZnSO₄ + Cu. It is also a redox reaction: Zn changes from oxidation state 0 to +2 and is oxidised, while Cu²⁺ changes to Cu and is reduced. Hence A is the most complete classification. It is not combination, thermal decomposition, or double displacement.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Chemical Reactions and Equations.
