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?
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Answer:
ஔஊதடயூடோயணைஊரஏணெரண
Explanation:
ஔமடஊஏஎயெணயெணகெஙத
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