Question

All the following are the alloys of iron EXCEPT
1. steel
2. invar
3. alnico
4. gun metal

Answer 1

Answer:

4. gun metal (EXCEPTION )

Explanation:

Stainless steel is an alloy of Iron, carbon, chromium, and nickel.

Invar Steel

- It is an alloy of Iron, carbon,  and nickel.

Alnico is an alloy of iron, nickel, cobalt, and aluminium .

Gun Metal -It consists of a  bronze; an alloy of copper, tin and zinc