General Science » Exercise - 172. Which of the following are the ingredients of gun metal? (a) Iron, Zinc, Titanium (b) Iron, tin (c) Iron, Brass, Tin (d) Copper, Tin
Tags: tin, general, science, exercise, metal, zinc, brass, copper
General Science » Exercise - 135. Which of the following does not contain a coinage metal? (a) Silver and Gold (b) Zinc and Gold (c) Copper and Silver (d) Copper and Gold
Tags: general, science, copper, exercise, metal, zinc