Which one among the following will you put into pure water in order to pass electric current through it ?

Pure water is a poor conductor of electricity because it lacks free ions. To make it conductive, an electrolyte must be added that dissociates into ions when dissolved. Lemon juice contains citric acid, which is a weak electrolyte that ionizes in water to produce hydrogen ions (H+) and citrate ions. These mobile ions act as charge carriers, allowing electric current to flow through the solution. In contrast, sugar (sucrose) is a non-electrolyte; although it dissolves, it does not form ions and thus does not conduct electricity. Kerosene and mustard oil are non-polar organic liquids that do not mix with water to form an ionic solution, making them unsuitable for conducting current in this context.