Explain what happens when salt is added to water and free ends of electrical wires are dipped in it.

Why is it dangerous to touch an electrical appliance with wet hands when in use?

List the changes that are seen in a solution when an electric current is passed through it.

Answer the following questions in detail. 

$a)$With the help of an activity, explain the chemical effects caused by electric current.

Describe the process by which a copper spoon can be coated with silver.

Give some applications of electroplating.

Identify the process shown in the picture.

Look at the picture below and answer the following question.

How is the process shown in the picture helpful?