The addition of high proportions of maganese makes steel useful in making rails or railroads because manganese useful in making rails or railroads because maganese

Options

A. Gives hardness to steel
B. Helph in the formation of oxides of iron
C. Can remove oxygen and sulphur
D. Can show the highest oxidation state of `+7`

Answer

A, C

Explanation

Manganese gives hardness to steel. It also removes oxygen and sulphur from steel by forming slag.
`Fe_2O_3+3Mnto3MnO+2Fe`
`MnO+SiO_2toMnSiO_3`