Verified Solution • 2025–26 Session
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QJEEM19Ch7622: JEE Main 2019 Chemistry - Class 12 JEEM19Ch7622 Solution: Match the ores (column A) with the metals (column B) : .tg…
Match the ores (column A) with the metals (column B) :
| (Column A) ores | (Column B) Metals | ||
|---|---|---|---|
| (I) | Siderite | (a) | Zinc |
| (II) | Kaolinite | (b) | Copper |
| (III) | Malachite | (c) | Iron |
| (IV) | Calamine | (d) | Aluminium |
Multiple Choice Options
- A (I)-(c); (II)-(d); (III)-(b); (IV)-(a)
- B (I)-(a); (II)-(b); (III)-(c); (IV)-(d)
- C (I)-(b); (II)-(c); (III)-(d); (IV)-(a)
- D (I)-(c); (II)-(d); (III)-(a); (IV)-(b)
Step-by-Step Verified Solution
Siderite : FeCO3
Kaolinite : Al2(OH)4Si2O5
Malachite : CuCO3 .Cu(OH)2
Calamine : ZnCO3
Note : ( Remember all those ores names. Any one of those can be asked in the exam.)
Oxides Ores :
(1) ZnO - Zincite
(2) Fe2O3 - Haematite
(3) Fe3O4 - Magnetite (FeO + Fe2O3 mixture)
(4) Fe2O3 . 3H2O - Limonite
(5) MnO2 - Pyrolusite
(6) Cu2O - Cuprite or Ruby Copper
(7) TiO2 - Rutile
(8) FeCr2O4 - Chromite (FeO + Cr2O3)
(9) FeTiO3 - Illmenite (FeO + TiO2)
(10) Na2B4O7 . 10H2O - Borax or Tincal
(11) U3O8 - Pitch Blende
(12) SnO2 - Tin Stone or Cassiterite
(13) Ca2B6O11 . 5H2O - Colemanite (2 Cao + 3 B2O3)
(14) Al2O3 . 2H2O - Bauxite
(15) Al2O3 . H2O - Diaspore
(16) Al2O3 - Corundum
Sulphides Ores :
(1) ZnS - Zinc Blende or Sphalerite
(2) PbS - Galena
(3) Ag2S - Argentite or Silver Glance
(4) HgS - Cinnabar
(5) Cu2S - Chalcocite or Copper glance
(6) CuFeS2 - Copper pyrites or Chalco pyrites (Cu2S + Fe2S3 mixture)
(7) FeS2 - Iron pyrites or Fool's Gold
(8) 3Ag2S . Sb2S2 - Pyrargyrite or ruby silver
Halides Ores :
(1) NaCl - Rock Salt
(2) KCl - Sylvine
(3) Na3AlF6 - Cryolite [3NaF + AlF6]
(4) CaF2 - Fluorspar
(5) KCl . MgCl2 . 6H2O - Carnalite
(6) AgCl - Horn Silver
Carbonates Ores :
(1) CaCO3 - Limestone
(2) MgCO3 - Magnesite
(3) CaCO3 . MgCO3 - Dolomite
(4) ZnCO3 - Calamine
(5) PbCO3 - Cerrusite
(6) FeCO3 - Siderite
(7) CuCO3 . Cu(OH)2 or Cu2CO3(OH)2 - Malachite or Basic Copper Carbonates
(8) 2 CuCO3 . Cu(OH)2 - Azurite
Sulphates Ores :
(1) CuSO4 . 2H2O - Gypsum
(2) MgSO4 . 7H2O - Epson Salt
(3) Na2SO4 . 10 H2O - Glauber's Salt
(4) PbSO4 - Anglesite
(5) ZnSO4 . 7H2O - White Vitriol
(6) FeSO4 . 7H2O - Green Vitriol
(7) CuSO4 . 5H2O - Blue Vitriol or Chalcanthite
Nitrate Ores :
(1) KNO3 - Indian Saltpetre
(2) NaNO3 - Chile Saltpetre
Arsenides Ores :
(1) NiAs - Kupfernickel
(2) NiAsS - Nickel glance
Kaolinite : Al2(OH)4Si2O5
Malachite : CuCO3 .Cu(OH)2
Calamine : ZnCO3
Note : ( Remember all those ores names. Any one of those can be asked in the exam.)
Oxides Ores :
(1) ZnO - Zincite
(2) Fe2O3 - Haematite
(3) Fe3O4 - Magnetite (FeO + Fe2O3 mixture)
(4) Fe2O3 . 3H2O - Limonite
(5) MnO2 - Pyrolusite
(6) Cu2O - Cuprite or Ruby Copper
(7) TiO2 - Rutile
(8) FeCr2O4 - Chromite (FeO + Cr2O3)
(9) FeTiO3 - Illmenite (FeO + TiO2)
(10) Na2B4O7 . 10H2O - Borax or Tincal
(11) U3O8 - Pitch Blende
(12) SnO2 - Tin Stone or Cassiterite
(13) Ca2B6O11 . 5H2O - Colemanite (2 Cao + 3 B2O3)
(14) Al2O3 . 2H2O - Bauxite
(15) Al2O3 . H2O - Diaspore
(16) Al2O3 - Corundum
Sulphides Ores :
(1) ZnS - Zinc Blende or Sphalerite
(2) PbS - Galena
(3) Ag2S - Argentite or Silver Glance
(4) HgS - Cinnabar
(5) Cu2S - Chalcocite or Copper glance
(6) CuFeS2 - Copper pyrites or Chalco pyrites (Cu2S + Fe2S3 mixture)
(7) FeS2 - Iron pyrites or Fool's Gold
(8) 3Ag2S . Sb2S2 - Pyrargyrite or ruby silver
Halides Ores :
(1) NaCl - Rock Salt
(2) KCl - Sylvine
(3) Na3AlF6 - Cryolite [3NaF + AlF6]
(4) CaF2 - Fluorspar
(5) KCl . MgCl2 . 6H2O - Carnalite
(6) AgCl - Horn Silver
Carbonates Ores :
(1) CaCO3 - Limestone
(2) MgCO3 - Magnesite
(3) CaCO3 . MgCO3 - Dolomite
(4) ZnCO3 - Calamine
(5) PbCO3 - Cerrusite
(6) FeCO3 - Siderite
(7) CuCO3 . Cu(OH)2 or Cu2CO3(OH)2 - Malachite or Basic Copper Carbonates
(8) 2 CuCO3 . Cu(OH)2 - Azurite
Sulphates Ores :
(1) CuSO4 . 2H2O - Gypsum
(2) MgSO4 . 7H2O - Epson Salt
(3) Na2SO4 . 10 H2O - Glauber's Salt
(4) PbSO4 - Anglesite
(5) ZnSO4 . 7H2O - White Vitriol
(6) FeSO4 . 7H2O - Green Vitriol
(7) CuSO4 . 5H2O - Blue Vitriol or Chalcanthite
Nitrate Ores :
(1) KNO3 - Indian Saltpetre
(2) NaNO3 - Chile Saltpetre
Arsenides Ores :
(1) NiAs - Kupfernickel
(2) NiAsS - Nickel glance