Question

A nail was placed into a copper sulfate solution. A day later, a layer of metal was formed on the
surface of the nail. What is the name of the reaction?

A. Neutralisation
B. Combustion
C. Displacement
D. Decomposition

Answer 1

Answer:

Decompostion

Explanation:

Because a layer of copper sulphate is deposited on the nail

Answer 2

Answer:

c) displacement

Explanation:

cu replaces fe of iron nails