Metals

51. Which of the following metals is the most malleable?
a) Copper
b) Iron
c) Aluminium
d) Gold

52. Which of the following metals is the lightest?
a) Iron
b) Aluminium
c) Copper
d) Lead

53. Which metal is used as a catalyst in the production of sulfuric acid?
a) Iron
b) Platinum
c) Gold
d) Copper

54. What is the main use of tin?
a) Manufacturing of steel
b) Making batteries
c) Construction
d) Making jewelry

55. Which of the following metals is not reactive with water?
a) Sodium
b) Magnesium
c) Copper
d) Gold