General Awareness · Geography

Minerals and Ores

1,167 Questions

Minerals and ores encompass the extraction, identification, and economic significance of naturally occurring crystalline substances. Topics cover specific ores like cinnabar and bauxite, alongside global mineral resource distribution. Candidates preparing for general awareness and geography sections should review these questions to master regional and global mineral reserves.

Ore identificationMineral extractionGlobal mineral reservesIndustrial minerals

Minerals and Ores Questions

Multiple choice

Which of the following is a pair of copper ores?

  1. Hematite and siderite

  2. Azurite and malachite

  3. Manganite and pyrolusite

  4. Limonite and pyrolusite

  5. Malachite and siderite
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Azurite, Cu3(CO3)2(OH)2: Copper ore Malachite, Cu2CO3(OH)2: Copper ore

Multiple choice

Baku is famous for the production of

  1. copper

  2. iron ore

  3. mica

  4. petroleum
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Baku, the capital of Azerbaijan, is historically and economically famous for its massive petroleum and natural gas reserves located in the Caspian Sea region.

Multiple choice

Silicon is abundantly present in

  1. coal

  2. sand

  3. limestone

  4. salt
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Silicon is the second most abundant element in the Earth's crust, primarily found in the form of silica (silicon dioxide) in sand and rocks.

Multiple choice

Cinnabar is an ore of

  1. copper

  2. iron

  3. mercury

  4. lead
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Cinnabar is the bright red form of mercury(II) sulfide and is the main ore of mercury.

Multiple choice

Dolomite is an ore of

  1. Mg

  2. Zn

  3. Fe

  4. Pb
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Dolomite is a carbonate mineral composed of calcium magnesium carbonate, CaMg(CO3)2, making it an important ore for magnesium.

Multiple choice

Match the Group - I (Minerals/ores) with Group - II (Chemical formula) accordingly.

 
Group - I
Group - II
A. crocoisite 1. PbCrO4
B. felspar 2. PbCO3
C. cerussite 3. KAlSi3O8
D. malachite 4. Cu(OH)2.CuCO3

  1. A - 1, B - 3, C - 2, D - 4

  2. A - 2, B - 1, C - 3, D - 4

  3. A - 2, B - 1, C - 4, D - 3

  4. A - 1, B - 2, C - 3, D - 4

  5. A - 4, B - 3, C - 2, D - 1
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Crocoisite (PbCrO4) is the ore of lead. Felspar (KAlSi3O8) is the mineral of potassium and Aluminium. Cerussite (PbCO3) is the carbonate ore of lead. Malachite (Cu(OH)2.CuCO3) is the carbonate ore of copper. Hence, this is the  correct representation of the codes A - 1, B - 3, C - 2, D - 4.

Multiple choice

Match the Group - I (ores) with Group - II (ore types).

 
Group - I
Group - II
P. Galena 1. sulphide
Q. Dolomite 2. silicate
R. Mica 3. oxide
S. Zincite 4. carbonate
5. hydroxide

  1. P - 1, Q - 4, R - 2, S - 3

  2. P - 3, Q - 4, R - 2, S - 5

  3. P - 3, Q - 4, R - 1, S - 2

  4. P - 1, Q - 2, R - 5, S - 3

  5. P - 4, Q - 3, R - 2, S - 1
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Galena (PbS) is the sulphide ore of Pb. Dolomite (CaCO3.MgCO3) is the carbonate ore of Mg. Mica (K2O.3Al2O3.6SiO2.2H2O) is the silicate ore of Al. Zincite (ZnO) is the oxide ore of Zn. Hence, the correct answer using the codes is P - 1, Q - 4, R - 2, S - 3.

Multiple choice

Which of the following pairs has only ores of lead?

  1. Gibbsite, Anglesite

  2. Crocoisite, Cerrusite

  3. Azurite, Anglesite

  4. Franlinite, Zincite

  5. Gibbsite, Franlinite
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The chief ores of lead are - Anglesite (PbSO4), Galena (PbS), crocoisite (PbCrO4), Cerrusite (PbCO3), etc.

Multiple choice

Which of the following is/are the oxide ore(s) of Fe?

  1. Hematite
  2. Magnetite
  3. Limonite
  4. Siderite

  1. Only 1

  2. Only 2

  3. Only 3

  4. Only 1 and 2

  5. Only 1, 2 and 4
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Yes, it is the correct answer. Iron ores are rocks and minerals from which metallic iron can be economically extracted. The ores are usually rich in iron oxides and vary in color from dark grey, bright yellow, deep purple, to rusty red. The oxide ore of iron are- magnetite (Fe3O4), hematite (Fe2O3). Limonite (Fe2O3.3H2O) is hydrated oxide ore of iron. Siderite (FeCO3) is the carbonate ore of iron.