Question

Which is a metal alloy?
Alnico,a mixture of aluminum, nickel, and cobalt used for making magnets
Iron, used for making nails, free weights, and ornamental garden fencing

Answer 1

Alnico is the metal alloy among the two options you provided. It is a mixture of aluminum, nickel, and cobalt, commonly used for making magnets. Iron, while a metal, is not an alloy; it is a pure element that can be used to make various objects like nails and free weights.