Case Study Question
Ramesh conducted an experiment in the school laboratory. He took a small amount of blue copper sulphate solution in a beaker. Then, he dipped a clean iron nail into it and left it undisturbed for some time. After 30 minutes, he observed that the blue colour of the solution faded, and a reddish-brown layer was deposited on the iron nail.
Based on this observation, answer the following questions:
(i) Which type of reaction took place in this experiment?
a) Combination reaction
b) Decomposition reaction
c) Displacement reaction
d) Double displacement reaction
(ii) Write the balanced chemical equation for the above reaction.
(iii) What is the reddish-brown substance deposited on the iron nail?
(iv) Name another metal that can displace copper from its salt solution.
(v) Which property of metals is demonstrated in this activity?
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