During galvanization, iron metal is given a thin coating of one of the following metals. This metal is:

82 Manganese metal is extracted from manganese dioxide by a reduction process by making use of: 83 The metal which can be extracted simply by heating the cinnabar ore in air is: 85 Which of the following metals are extracted by the electrolysis of their molten chlorides? 86 Rock salt is an ore of one of the following metals. This metal is :