(Bauxite, Corundum,
Lapis Lazuli, Carborundum)
Ans: Carborundum
2. Which of the following is the ore of
aluminium?
(Bauxite, Corundum,
Lapis Lazuli, Carborundum)
Ans: Bauxite
3. Galena is the ore of:
Ans: Lead
4. Which of the following is not mineral of
calcium?
(Dolomite, Marble,
Pyrolusite, Gypsum)
Ans: Pyrolnsite
5. Which alloy is first used by man?
(Brass, Bronze, Steel,
Nichrome)
Ans: Bronze
6. Which alloy has least thermal expansion?
Ans: Invar
7. Which alloy is used for making 'types'?
Ans: Type metal
8. Which alloy is used for making magnets?
Ans: Alnico
9. Argentite is the mineral of:
Ans: Silver
10. The ore of mercury is:
Ans: Cinnabar
11. Bismuth aurite is the mineral of:
Ans: Gold
12. The alloys which are used for making springs
is:
Ans: Phosphor bronze
13. Copper, Nickel and Zinc are the component
metals of the alloy:
Ans: German silver
14. Which metal is obtained from the earth in
its pure form and not as
minerals?
Ans: Platinum
15. The component metals of alloy, Bronze are:
Ans: Copper and Tin
16. Which of the following alloys is used ' for
making the heating elements of iron boxes?
(Alnico, Nichrome,
Invar, Brass)
Ans: Nichrome
17. Fuse wires are matte up of:
Ans: Solder
18. The component metals of the alloy solder are:
Ans: Lead and Tin
19. Which alloy is used for malting the
pendulums of clocks?
Ans: Inver
20. The inner parts of steamers are made up of:
Ans: Magnalium
21. Pitch blende is the ore of:
Ans: Uranium
22. Which of the following is the ore of
manganese?
(Cinnabar, Magnesite,
Dolomite, Pyrolusite)
Ans: Pyrolusite
23. Cassiterite is the ore of:
Ans: Tin
24. Which alloy is used for making carpentry tools?
Ans: Chrome steel
25. The component metals of the alloy, 'Hold
gold' are:
Ans: Copper and Aluminium
26. Malachite is the ore of:
Ans: Copper
27. Which of the following alloys is used for
making the electric instruments?
(Chrome steel, Aluminium
bronze, Constantan, Invar)
Ans: Constantan
28. The component metals of the alloy Silumin
are:
Ans: Silicon and Aluminium
29. The alloy which is used for making barrels
of guns is:
Ans: Gunmetal
30. Which of the following is the ore of Lead?
(Cinnabar, Pitchblende,
Litharge, Pyrolusite)
Ans: Litharge
31. Name the components of Nickel steel?
Ans: Iron and nickel
32. Which of the following alloys is used for
making engine parts?
(Chrome steel,
Constantan, Gunmetal, Silumin)
Ans: Silumin
33. Which of the following is not an ore of Calcium?
(Limestone, Dolomite,
Fluorspar, Litharge)
Ans: Litharge
34. Monosite is an ore of:
Ans: Thorium
35. Which alloy is used for making aircrafts?
Ans: Duralumin
36. The arils of motor cars are made up of:
Ans: Chrome vanadium steel
37. The components of Chrome vanadium steel are:
Ans: Chromium, vanadium and iron
38. Which of the following is an ore of Copper?
(Monosite, Litharge,
Malachite, Sylvine)
Ans: Malachite
39. Ilmenite is the ore of:
Ans: Titanium
40. Which of the following is not a mineral of
copper?
(Chalcopyrite,
Malachite, Copper glance, Dolomite)
Ans: Dolomite
41. Calamine is the ore of:
Ans: Zinc
42. Which of the following is not a mineral of lead?
(Litharge, Galena,
Fluorspar, Cerussite)
Ans: Fluorspar
43. Nitre is a mineral of the metal?
Ans: Potassium
44. Which of the following is the ore of Iron?
(Pyrolusite, Haematite,
Bauxite, Dolomite)
Ans: Haematite
45. Copper, aluminium, magnesium and manganese
are the components of the alloy:
Ans: Duralumin
46. Which of the following metal is not a
component of German silver?
(Copper, Zinc, silver,
Nickel)
Ans: silver
47. Who discovered the alloy, Stainless steel?
Ans: Harry Brearley
48. Which of the following is not a mineral of
iron?
(Haematite, Magnetite,
Iron pyrites, Gypsum)
Ans: Gypsum
49. The alloy which do not undergo corrosion
even in seawater is:
Ans: Magnalium
50. Which of the following is used for making
measuring instruments?
(Invar Silumin,
Magnalium, Steel)
Ans: Invar
51. Brass is an alloy of:
Ans: Copper and zinc
52. The earthly impurities present along with
the ores are called?
Ans: Gangue
53. Iron pyrites is 'known as:
Ans: Fool's Gold
54. Pitchblende is chemically:
Ans: Uranium oxide
55. The common name of Calcium sulphate is:
Ans: Gypsum
56. Which of the following is a sulphide ore?
(Calamine, Dolomite,
Cinnabar, Bauxite)
Ans: Cinnabar
57. The alloy which is formed when carbon joins
with iron?
Ans: Steel
58. Alloys which contain mercury are commonly
called:
Ans: Amalgam
59. The alloy used for polishing the back sides
of mirrors are:
Ans: Tin amalgam
60. Which alloy is used for making electrical
resistors?
Ans: Manganin
61. Alloy steel containing chromium to resists
rusting is known as:
Ans: Stainless steel
62. Aluminium in the earth's crust is found as:
Ans: Bauxite
63. The main constituent of the mineral
"Lime stone" is:
Ans: Calcium carbonate
64. The chemical name of "Milk of
magnesia" is:
Ans: Magnesium hydroxide
65. Which of the following alloy contains non-metal
as a component?
(German silver, Gun
metal, Steel, Nichrome)
Ans: Steel
66. Which of the following alloy do not contains
any non-metal as a component?
(Phosphor bronze, Steel,
Silumin, Invar)
Ans: Invar
67. Which of the following alloys is used for
manufacturing caps of cartridges?
(Brass, Gunmetal,
Bronze, German silver)
Ans: Brass
68. Out of the following substances the one that
is not an alloy is:
(Steel, Brass, Bronze,
Copper)
Ans: Copper
69. Iron carbide is commonly called:
Ans: Steel
70. The chemical name of Bauxite is:
Ans: Hydrated aluminium oxide
71. Blue coloured aluminium mineral is:
Ans: Lapis Lazuli
72. Ornamental gold is an alloy of:
Ans: Gold and copper
73. Which of the following alloy has lowest
melting point?
(Alnico, Duralumin,
Solder, Nichrome)
Ans: Solder
74. Which of the following is the ore of
Beryllium?
(Beryl, Berylitite,
Scheelite, Chromite)
Ans: Beryl
75. Bornite is the ore of:
Ans: Copper
76. The ore of Tungsten is:
Ans: Wolframite
77. Which of the following is the ore of metal
Chromium?
(Chromal, Chromite,
Scheelite, Beryl)
Ans: Chromite
78. Which of the following is not the mineral of
Copper?
(Bornite, Chalcocite,
Malachite, Pyrolusite)
Ans: Pyrolnsite
79. Scheelite is the ore of:
Ans: Tungsten
80. The ore of Cobalt is:
Ans: Cobaltite
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