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

Bauxite is an ore of

  1. iron

  2. aluminium

  3. copper

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

Bauxite, an aluminium ore, is the world's main source of aluminium.

Multiple choice

Hematite is an ore of

  1. iron

  2. aluminium

  3. copper

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

Hematite is the most important ore of iron.

Multiple choice

Directions: For the Assertion (A) and Reason (R) given below, choose the correct alternative.

Assertion (A): Bauxite is the chief ore of aluminium. Reason (R): Amarkantak plateau is a main area of bauxite deposits in India.

  1. A is true, R is false

  2. A is false, R is true

  3. Both A and R are true, but R is not the correct explanation of A.

  4. Both A and R are true and R is the correct explanation of A.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Both A and R are true, but R is not the correct explanation of A.

Bauxite is the principal ore of aluminum. The first step in producing aluminum is to crush the bauxite and purify it using the Bayer Process. In the Bayer Process, the bauxite is washed in a hot solution of sodium hydroxide, which filters aluminum from the bauxite.

R tells the location, but not the reason for Bauxite being the main ore of aluminium.

Multiple choice

Recently, some minerals found in India are evaluated as "most critical" for India's manufacturing sector by 2030. Which of the following is/are these scarce resources?

  1. Limestone

  2. Graphite

  3. Rare earths

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

The study conducted by Department of Science and Technology identifies 12 minerals out of 49 that are evaluated as "most critical" for India's manufacturing sector by 2030. These are rare earths, beryllium, chromium, germanium, niobium, rhenium, strontium, zirconium, tantalum, limestone and graphite. Hence, the correct option is 4.

Multiple choice

In reference to Monazite sands, following minerals is/are present:

1.         Uranium 2.         Thorium 3.         Cerium 4.         Lanthanum

Which of the following is/are correct?

  1. Only 1

  2. Only 2

  3. Only 3

  4. 1, 2, 3 and 4
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Monazite is a reddish-brown phosphate mineral containing rare earth metals. It occurs usually in small isolated crystals. It is enriched in lanthanum and cerium. Monazite is radioactive due to the presence of uranium.