Question

Choose the correctly matched pair.

$Pair$	$Category$
Ferrous	Natural Gas
Non-Ferrous	Nickel
Non-Metallic Minerals	Limestone
Energy Minerals	Cobalt

Answer 1

Ferrous: Refers to minerals containing iron, not natural gas.
Non-Ferrous: Includes metals like Nickel, but not in the provided context.
Non-Metallic Minerals: Limestone is a correct example of this category.
Energy Minerals: Include coal, petroleum, and uranium, but not cobalt.