G.K. Questions on Metals & Alloys

26. Bauxite is an ore of which of the following metals?

  1. iron
  2. copper
  3. aluminium
  4. gold

27. Minamata disease is caused by the poisoning effect of -

  1. Mercury
  2. Lead
  3. Cadmium
  4. Zinc

28. Which of the following metals is often found in the pure state?

  1. Iron
  2. Aluminium
  3. Cadmium
  4. Gold

29. Which of the following metals is extracted from haematite?

  1. Iron
  2. Aluminium
  3. Silver
  4. Zinc

30. Stainless steel is an alloy of -

  1. zinc, nickel and chromium
  2. iron, zinc and chromium
  3. iron, nickel and chromium
  4. copper, chromium and iron

31. Which of the following is a naturally occurring alloy of gold and silver?

  1. electrum
  2. strontium
  3. argentinum
  4. molybednum

32. Cisplatin, a cancer drug is a compound of which of the following metals?

  1. gold
  2. radium
  3. platinum
  4. thorium

33. Zinc is not present in

  1. brass
  2. bronze
  3. gun metal
  4. german silver

34. Which one of the following is the most malleable metal?

  1. gold
  2. silver
  3. aluminium
  4. zinc

35. Which of the following is known as the metal of future?

  1. neptunium
  2. platinum
  3. titanium
  4. gold

36. Cinnabar is an ore of

  1. copper
  2. mercury
  3. iron
  4. lead

37. Which of the following sets make the terminals of the torch cell?

  1. carbon - zinc
  2. zinc - copper
  3. zinc - aluminium
  4. carbon - copper

38. Which of the following is the pure form of iron?

  1. pig iron
  2. wrought iron
  3. steel
  4. cast iron

39. The trace metal present in insulin is

  1. iron
  2. zinc
  3. cobalt
  4. manganese


40. Which of the following metals can be extracted from casseterite?

  1. gold
  2. zinc
  3. mercury
  4. tin

41. Chocolates can be bad for health because of a high content of

  1. cobalt
  2. nickel
  3. zinc
  4. lead

42. Solder metal is an alloy of

  1. lead and tin
  2. lead and antimony
  3. copper and zinc
  4. copper and tin


43. At 30° C, which 3 metals are all liquids?

  1. Hg, Fe, Zn
  2. Hg, Sn, Pb
  3. Zn, Pb, Sn
  4. Hg, Ga, Cs

44. The first metal to be used by man was

  1. aluminium
  2. copper
  3. iron
  4. silver

45. Which one of the following does not contain silver ?

  1. Horn silver
  2. German silver
  3. Ruby silver
  4. Lunar caustic

46. The term ‘Carat’ is used to express purity of gold. The purest form of gold is :

  1. 18 carats
  2. 20 carats
  3. 22 carats
  4. 24 carats

47. From which of the following ores can iron be extracted?

  1. galena
  2. cryolite
  3. magnetite
  4. cinnabar

48. The metal compound commonly found in Sindoor or kumkum is based on

  1. tin
  2. copper
  3. lead
  4. zinc

49. Which one of the following metals is used in fireworks to make brilliant white light?

  1. sodium
  2. magnesium
  3. aluminium
  4. silver

50. Food cans are coated with tin but not with zinc becasue -

  1. zinc is costlier than tin
  2. zinc has higher melting point than tin
  3. zinc is more reactive than tin
  4. tin is more reactive than zinc


51. The planet Mars appears red in colour due to the presence of which of the following minerals?

  1. bauxite
  2. cobaltite
  3. magnetite
  4. hematite