58) Which is a process that decomposes a chemical compound into its elements or produces a new compound by the action of an electrical current.

59) The hardness value of Hard Chromium plating is in the range of

60) Which is a neutral salt

61) The 'Robber' or 'Thief' used in an electroplating bath is

62) For silver plating of all the external surfaces of a solid cylinder with 5 cm diameter and 12 cm length, the total current required is _____, if the current density applied is 2.5 Amp/dm2.