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 geography manufacturing industries in india - ii : mineral-based distribution of major industries automobile and electronic industries electronic, heavy and petrochemical industries in india

Which of the following industries was de-reserved in 1993?

  1. Atomic energy

  2. Mining of copper and zinc

  3. Atopic minerals

  4. none of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

 

Mining of copper and zinc was de-reserved in 1993 according to national mining policy.

This was done to attract private investors in mine exploration.

This was amended several times to provide reasonable concession to attract the private sector investment 

Multiple choice geography rocks and rock cycle rock cycle and uses of rocks rocks - introduction and importance lithosphere and asthenosphere

Rocks are the economic significance because _________________.

  1. They provide soils.

  2. They provide metals.

  3. They provide minerals.

  4. All of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
  • Rocks are the parent material for soil.
  • Rocks are also found in form of ores which serve as a source of various metals.
  • Rocks are the source of various minerals like phosphates and nitrates.
  • Hence all are correct.
Multiple choice aluminium patterns and properties of metals chemistry

The common impurities present in bauxite are:

  1. ${ Fe } _{ 2 }{ O } _{ 3 },{ SiO } _{ 2 }$
  2. $NaCl,{ MgCl } _{ 2 }$
  3. ${ AlCl } _{ 3 },{ MgCl } _{ 2 }$
  4. ${ CaCl } _{ 2 },{ MgCl } _{ 2 }$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Bauxite has a number of impurities in it including iron oxides(hematite and goethite), $Fe _2O _3$ the sand silicon dioxide $SiO _2$ the clay mineral Kaolinite and asmall amount of $TiO _2$ known as Anatase.

Hence option A is correct answer.

Multiple choice aluminium patterns and properties of metals chemistry

Bauxite, diaspore and cryolite are the ore of the:

  1. aluminium

  2. zinc

  3. copper

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

Bauxite-$Al _2O _3$

Dispore- repeating units $AlO(OH)$
Cryolite- $Na _3AlF _6$
These are ores of aluminiunm.

Multiple choice chemistry production of metals extraction of aluminium metallurgy of aluminium extraction of metals by electrolysis

Identity the principle behind the concentration of bauxite ore.

  1. Magnetic property of impurities in white bauxite
  2. Low specific gravity of $Al _{2}O _{3}$
  3. Amphoteric nature of $Al _{2}O _{3}$
  4. High melting point of $Al _{2}O _{3}$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

$Al _2O _3 + 2NaOH + 3H _2O \rightarrow 2Na[Al(OH) _4]$
$Al _2O _3 + 6HCl \rightarrow 2AlCl _3 + 3H _2O$

Hence, in both the ways, Al can be concentrated, which owes to its amphoteric nature. 

Multiple choice

Which one is a category for the other three?

  1. diamonds

  2. gold

  3. rubies

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

Diamonds, gold, and rubies are all types of valuable items that can be classified as treasures. Treasures is the category that encompasses the others.