For electroplating copper on an iron object, which terminal of the battery is connected to the iron object? Which electrolyte is used for this purpose?

Differentiate between electrolytes and non-electrolyte.

Define cathode and anode.

Why chromium is used for electroplating?

All liquids conduct electricity. Comment.

Are lemon juice, vinegar and tap water, conductors or insulator?

Describe briefly, how you will purify it by using the chemical of electric current. When a strip of impure copper metal is given to you. 

Write the applications of electrolysis.