Tag: commercial applications

Questions Related to commercial applications

Minerals lying near the surface can be extracted by a simple process called __________.

commercial applications treasure under the ground conservation of mineral resources distribution and conservation of mineral resources indian mineral and power resources

  1. Open cast mining

  2. Underground mining

  3. Quarrying

  4. Drilling

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Correct Option: C
Explanation:

Minerals can be extracted by mining, drilling or quarrying. For minerals near the surface quarrying is done to extract them.

Which country is the largest producer and exporter of mica in the world?

commercial applications treasure under the ground conservation of mineral resources distribution and conservation of mineral resources indian mineral and power resources

  1. China

  2. India

  3. Jamaica

  4. Brazil

Show answer
Correct Option: B
Explanation:

India is the largest producer and exporter of mica in the world. Mica deposits mainly occur in Jharkhand, Bihar, Andhra Pradesh and Rajasthan. 

Which metal or alloy is considered to be the backbone of manufacturing industries?

commercial applications treasure under the ground conservation of mineral resources distribution and conservation of mineral resources indian mineral and power resources

  1. Iron

  2. Aluminium

  3. Manganese

  4. Steel

Show answer
Correct Option: D
Explanation:
Steel is needed to manufacture a variety of engineering goods, construction material, defence, medical, telephonic, scientific equipment and a variety of consumer goods.
Steel, composed simply of iron and carbon, accounts for 90% of steel production. Low alloy steel is alloyed with other elements, usually molybdenum, manganese, chromium, or nickel, in amounts of up to 10% by weight to improve the hardenability of thick sections.

Which of the following is an example of non-conventional source of energy?

commercial applications treasure under the ground conservation of mineral resources distribution and conservation of mineral resources indian mineral and power resources

  1. Solar energy

  2. Geothermal energy

  3. Tidal energy

  4. All of these

Show answer
Correct Option: D
Explanation:

Non- conventional sources of energy are those which have been developed in the recent past as an alternative to conventional sources of energy. These include solar energy, wind energy, tidal energy, geothermal energy, nuclear energy and biogas. They are renewable and therefore, inexhaustible, non-polluting, less expensive and easy to maintain.

Solar energy: Energy from sun is called solar energy and it is the most abundant source of energy.

Geo-thermal energy: It is the heat energy contained in the rock and fluid that fills the fractures and pores within the rock in the earth's crust. It is clean and sustainable.

Tidal energy: Energy generated from tides is called tidal energy. Tidal energy can be harnessed by building dams at narrow openings of the sea. The Gulf of Kuch is best suited for tidal energy.

A metal that is used widespread in the electrical industry is ___________.

commercial applications treasure under the ground conservation of mineral resources distribution and conservation of mineral resources indian mineral and power resources

  1. Copper

  2. Silver

  3. Gold

  4. Platinum

Show answer
Correct Option: A
Explanation:
 Being malleable, ductile and a good conductor, copper is mainly used in electrical cables, electronics  and chemical industries. 

Which of the following is an example of a non-ferrous metal?

commercial applications treasure under the ground conservation of mineral resources distribution and conservation of mineral resources indian mineral and power resources

  1. Nickel

  2. Cobalt

  3. Copper

  4. Iron ore

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Correct Option: C
Explanation:

Non-ferrous minerals are those which do not have iron content in them like copper, bauxite, etc. They play a vital role in metallurgical, engineering and electrical industries.

Which of the following states of India has immense potential for developing wind energy?

commercial applications treasure under the ground conservation of mineral resources distribution and conservation of mineral resources indian mineral and power resources

  1. Sikkim

  2. Rajasthan

  3. Punjab

  4. Orissa

Show answer
Correct Option: B
Explanation:

Wind energy generation in India began since 1986 with the setting up of wind farms in the coastal areas of Maharashtra, Gujarat and Tamil Nadu.

Among the given options Rajasthan occupies a leading position in the generation of wind energy with 4031.99 MW wind power installed. Its place is after Tamil Nadu and Maharashtra.

Which one of the following mineral is obtained from ocean water?

commercial applications treasure under the ground conservation of mineral resources distribution and conservation of mineral resources indian mineral and power resources

  1. Aluminium

  2. Sulphur

  3. Magnesium

  4. Jute

Show answer
Correct Option: C
Explanation:

The ocean waters contain vast quantities of minerals, but most of these are too widely diffused to be of economic significance. However, common salt, magnesium and bromine are largely derived from ocean waters. The ocean beds, too, are rich in manganese nodules.

Sunlight, water, wind and biomass are the  __________.

commercial applications treasure under the ground conservation of mineral resources distribution and conservation of mineral resources indian mineral and power resources

  1. Conventional sources of energy

  2. Non-conventional sources of energy

  3. Instant sources of energy

  4. Latent sources of energy

Show answer
Correct Option: B
Explanation:

Sunlight, water, wind and biomass are the non-conventional sources of energy. Non-conventional sources are replenishable and safe to ecology. Non-conventional means not widely in use.

The metals used in electric industry are _______.

commercial applications treasure under the ground conservation of mineral resources distribution and conservation of mineral resources indian mineral and power resources

  1. Copper

  2. Aluminum

  3. Mica

  4. All of these

Show answer
Correct Option: D
Explanation:

  • Being malleable, ductile and a good conductor, copper is mainly used in electrical cables, electronics  and chemical industries.
  • Aluminium is an important metal because it combines the strength of metals such as iron, with extreme lightness and also with good conductivity and great malleability.
  • Due to its excellent dielectric strength, low power loss factor, insulating properties and resistance to high voltage, mica is one of the most indispensable minerals used in electric and electronic industries.