Question

Rock salt is an ore of one of the following metals. This metal is ______.

Options

• Mn

• Na

• Fe

• Cu

Answer 1

Rock salt is an ore of one of the following metals. This metal is Na.

Explanation:

Rock salt is the naturally occurring mineral form of sodium chloride (NaCl), making it the primary ore used to extract sodium (Na) metal via electrolytic reduction. The other options are incorrect because manganese (Mn) is extracted from pyrolusite, iron (Fe) is extracted from haematite, and copper (Cu) is extracted from copper glance (chalcopyrite).