Question

Raj took a solution of copper sulphate into a beaker and put a clean nail into it and left it for about an hour. Answer the following question based on this.

a.
What changes do you expect?

[1]
b.
Are these changes chemical in nature? Give reason for your answer.

[1]
c.
Write a word equation for the chemical changes, if any.

[1]
d.
What happens when zinc granule are added to copper sulphate solution?

[1]
e.
What is displacement reaction?​

Answer 1

Answer:

ஔஊதடயூடோயணைஊரஏணெரண

Explanation:

ஔமடஊஏஎயெணயெணகெஙத