Name any two applications of the chemical effect of electric current.

For electroplating copper on an iron object, which terminal of the battery (positive or negative) is connected to the iron object? Also name the electrolyte you will use for this purpose.

What is meant by the chemical effect of electric current? Explain with the help of an example.

What is electrolysis? Explain why, in the electrolysis of water, 'acidified water' is used.

Name three types of substances in which an electric current can produce a chemical effect.