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 chemistry production of metals extraction of metal from concentrated ore basics of metallurgy extraction of metals from ore

Ores contain a large amount of impurities, which is called as:

  1. ore

  2. gangue

  3. dust

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

Ores contain large amount of impurities, which is called as gangue. The process of removing of impurities by physical means of methods like hand picking, crushing or pulverizing and grinding) is called dressing of ore.

Multiple choice commercial applications water and air and their importance natural resources and their types promotion of renewable resources protecting our environment

Mineral and metals are 

  1. Biodegradable resources

  2. Renewable

  3. Non- renewable

  4. Renewable and non - renewable resources
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Minerals and metals are non renewable sources of energy as depletion in it is not possible to renew again.

Thus, the correct answer is 'Non - renewable.'

Multiple choice commercial applications water and air and their importance natural resources and their types promotion of renewable resources protecting our environment

Which of the following resources is going to be exhausted by the end of this century?

  1. Lead

  2. Gold

  3. Tin

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The minerals are obtained from the ores through mining. There are limited resources of the minerals present in the Earth's crust. Lead is used in the making of the batteries of the electronic devices. Gold is known for its commercial value in the making of the jewellery. Tin is used for various purposes from the ancient age. Tin was used for the making of coin, utensils, alloy making, etc. Tin is now commonly used for the preparation of the jars. The exploitation of these metals has resulted in fewer resources left and so, the metal resources will be exhausted first.

Thus, the correct answer is option D. 

Multiple choice commercial applications water and air and their importance natural resources and their types promotion of renewable resources protecting our environment

Which resource is belived to exhaust first?

  1. Gold

  2. Tin

  3. Coal

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

The minerals are obtained from the ores through mining. There are limited resources of the minerals present in the Earth's crust. Tin is used for various purposes from the ancient age. Tin was used for the making of coin, utensils, alloy making, etc. Tin is now commonly used for the preparation of the jars. The exploitation of the metal has resulted in fewer resources left and so, the metal resource will be exhausted first.

Thus, the correct answer is option B. 

Multiple choice commercial applications water and air and their importance natural resources and their types promotion of renewable resources protecting our environment

Minerals extracted from earth are

  1. Conventional resources

  2. Non-conventional resources

  3. Both A and B

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Minerals are finite resources that take millions of years to form. Because they are limited and have been traditionally used for industrial development, they are classified as conventional resources.

Multiple choice commercial applications water and air and their importance natural resources and their types promotion of renewable resources protecting our environment

Minerals and metals are

  1. Biodegradable resources

  2. Renewable

  3. Non-renewable

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

The resources which cannot be replenished again after consumption of resources are known as non-renewable resources. The minerals and metals are obtained from the ores through the process of mining. There are limited reserves of the ores in the Earth's crust.

Thus, the correct answer is option C. 

Multiple choice geography in the land of kerala introduction to metallurgy occurrence of metals study of kerala

Pyrolusite is:

  1. a sulphide ore of $Mn$
  2. an oxide ore of $Mn$
  3. a carbide ore of $P$
  4. a chloride ore of $Zn$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Out of many minerals in which a metal may be found, only a few are viable to be used as source of that metal. Such minerals are known as ores.
Not all elements exists in pure states. Some elements exist in combined states.Among them the viable ones are there ores and the pure metal is obtained after undergoing various metallurgical processes.
Pyrolusite-($MnO _2$) is an oxide ore of Manganese.

Multiple choice geography in the land of kerala introduction to metallurgy occurrence of metals study of kerala

Identify the ore not containing iron.

  1. Limonite

  2. Siderite

  3. Carnelite

  4. Chalcopyrites
Reveal answer Fill a bubble to check yourself
C,D Correct answer
Explanation
Limonite, $Fe _2O _3.3H _2O$ and Silderite, $FeCO _3$ are iron ore.

Carnallite is an evaporite mineral, a hydrated potassium magnesium chloride with formula $KMgCl _3.6H _2O$. 

Chalcopyrite is the most important and major source of copper metal. It is widely spread copper–iron sulphide mineral with chemical formula, $CuFeS _2$.

Thus, Carnelite and chalcopyrite are not the ore of iron.

Hence, option C and D are correct.
Multiple choice geography in the land of kerala introduction to metallurgy occurrence of metals study of kerala

Composition of azurite mineral is:

  1. $CuCO _3.CuO$
  2. $Cu(HCO _3) _2.Cu(OH) _2$
  3. $2CuCO _3.Cu(OH) _2$

  4. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Azurite is one of the basic copper (II) carbonate minerals, the other being bright green malachite. Simple copper carbonate (CuCO3) is not known to exist in nature. Azurite has the formula $Cu(CO _3) _2(OH) _2$ with the copper (II) cations linked to two different anions, carbonate and hydroxide.

Hence the composition of azurite mineral is $2CuCO _3.Cu (OH) _2$