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Current Affairs Questions
Natural Resources:
Shallow Gas
Recently, in which of the following country, fourth largest reservoir of shallow gas in the world has been discovered?
A
United Arab Emirates (UAE)
B
Russia
C
Qatar
D
Turkmenistan
Your Ans is
Right ans is A
Your Answer Is Correct
Your Answer Is Wrong
Explanation :
- On 3rd February, 2020, the United Arab Emirates (UAE) announced thatit had discovered a new natural gas field with 80 trillion standard cubic feet (tscf) of shallow gas resources.
- The reservoir, named ‘Jebel Ali’, is located between the emirates of Dubai and Abu Dhabi, which along with five other emirates form the UAE.
- The gas find is the largest since the discovery of the Galkynysh field in Turkmenistan in 2005. At 80 tscf, the new reservoir would now be ranked the fourth largest by size in the Middle East, behind the North Field in Qatar, South Pars in Iran, and the Bab field in Abu Dhabi. The Qatari and Iranian fields are part of the same deposit.
Impact
- The Jebel Ali reserve contains shallow gas, which refers to organic gas found just beneath the earth’s surface. The nature of the gas means the cost of the production is much lower than that for reaching deeper resources.
- Further, the discovery is expected to reduce the UAE’s dependence on gas supplies for electricity from Qatar, a nation with which the former has had a bitter standoff since 2017.
Rare Earth Elements
With reference to Rare Earth Elements(REE), consider the following statements:
- Rare Earth Elements (REE) is the collective name for 19 chemically similar metallic elements (the lanthanides, Scandium and Yttrium) that occur in a wide range of REE bearing minerals and are mined collectively.
- The principal economic sources of rare earths are the minerals bastnasite, monazite, and loparite and the lateritic ion-adsorption clays.
Choose the correct answer from the codes given below:
A
Only 1
B
Only 2
C
Both 1 and 2
D
Neither 1 nor 2
Your Ans is
Right ans is B
Your Answer Is Correct
Your Answer Is Wrong
Explanation :
- The Rare Earth Elements (REE) are a set of seventeen metallic elements. These include the fifteen lanthanides on the periodic table plus scandium and yttrium.
- 15 REE are- lanthanum (La), cerium (Ce), praseodymium (Pr), neodymium (Nd), promethium (Pm), samarium (Sm), europium (Eu), gadolinium (Gd), terbium (Tb), dysprosium (Dy), holmium (Ho), erbium (Er), thulium (Tm), ytterbium (Yb), and lutetium (Lu).
- The principal economic sources of rare earths are the minerals bastnasite, monazite, and loparite and the lateritic ion-adsorption clays.
- Although these elements are referred to as rare they are not particularly rare in the earth’s crust. Cesium is the 25th most abundant crustal element and lutetium, the scarcest REE, is about the 60th most abundant.
REEs are categorized as being either light or heavy:
- Light REEs (lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium and scandium) are produced in global abundance and are in surplus supply
- Heavy REEs (terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium and yttrium) are produced mainly in China and are in limited supply.
Uses
- Their unique magnetic, luminescent, and electrochemical properties make them essential to such products as smartphones, electric cars, camera lenses, X-ray scanners, wind turbines, and computer hard drives.
- REE are essential raw materials for a wide range of applications, including metallurgy (metal refining and metal alloying), catalysts in the automotive and the petro-chemical industry, colouring of glass/ceramics, phosphors (LEDs, compact fluorescent lamps, flat panel displays), lasers, rechargeable solid state batteries (Ni-MH), fibre optics and others.
- Additionally, REE are vital elements in emerging technologies such as solid state fuel cells, superconductors, magnetic cooling, hydrogen storage and high performance permanent magnets.
Showing 1-2 of 2 items.
Shallow Gas
Recently, in which of the following country, fourth largest reservoir of shallow gas in the world has been discovered?
A |
United Arab Emirates (UAE)
|
|
B |
Russia
|
|
C |
Qatar
|
|
D |
Turkmenistan
|
Your Ans is
Right ans is A
Your Answer Is Correct
Your Answer Is Wrong
Explanation :
- On 3rd February, 2020, the United Arab Emirates (UAE) announced thatit had discovered a new natural gas field with 80 trillion standard cubic feet (tscf) of shallow gas resources.
- The reservoir, named ‘Jebel Ali’, is located between the emirates of Dubai and Abu Dhabi, which along with five other emirates form the UAE.
- The gas find is the largest since the discovery of the Galkynysh field in Turkmenistan in 2005. At 80 tscf, the new reservoir would now be ranked the fourth largest by size in the Middle East, behind the North Field in Qatar, South Pars in Iran, and the Bab field in Abu Dhabi. The Qatari and Iranian fields are part of the same deposit.
Impact
- The Jebel Ali reserve contains shallow gas, which refers to organic gas found just beneath the earth’s surface. The nature of the gas means the cost of the production is much lower than that for reaching deeper resources.
- Further, the discovery is expected to reduce the UAE’s dependence on gas supplies for electricity from Qatar, a nation with which the former has had a bitter standoff since 2017.
Rare Earth Elements
With reference to Rare Earth Elements(REE), consider the following statements:
- Rare Earth Elements (REE) is the collective name for 19 chemically similar metallic elements (the lanthanides, Scandium and Yttrium) that occur in a wide range of REE bearing minerals and are mined collectively.
- The principal economic sources of rare earths are the minerals bastnasite, monazite, and loparite and the lateritic ion-adsorption clays.
Choose the correct answer from the codes given below:
A |
Only 1
|
|
B |
Only 2
|
|
C |
Both 1 and 2
|
|
D |
Neither 1 nor 2
|
Your Ans is
Right ans is B
Your Answer Is Correct
Your Answer Is Wrong
Explanation :
- The Rare Earth Elements (REE) are a set of seventeen metallic elements. These include the fifteen lanthanides on the periodic table plus scandium and yttrium.
- 15 REE are- lanthanum (La), cerium (Ce), praseodymium (Pr), neodymium (Nd), promethium (Pm), samarium (Sm), europium (Eu), gadolinium (Gd), terbium (Tb), dysprosium (Dy), holmium (Ho), erbium (Er), thulium (Tm), ytterbium (Yb), and lutetium (Lu).
- The principal economic sources of rare earths are the minerals bastnasite, monazite, and loparite and the lateritic ion-adsorption clays.
- Although these elements are referred to as rare they are not particularly rare in the earth’s crust. Cesium is the 25th most abundant crustal element and lutetium, the scarcest REE, is about the 60th most abundant.
REEs are categorized as being either light or heavy:
- Light REEs (lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium and scandium) are produced in global abundance and are in surplus supply
- Heavy REEs (terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium and yttrium) are produced mainly in China and are in limited supply.
Uses
- Their unique magnetic, luminescent, and electrochemical properties make them essential to such products as smartphones, electric cars, camera lenses, X-ray scanners, wind turbines, and computer hard drives.
- REE are essential raw materials for a wide range of applications, including metallurgy (metal refining and metal alloying), catalysts in the automotive and the petro-chemical industry, colouring of glass/ceramics, phosphors (LEDs, compact fluorescent lamps, flat panel displays), lasers, rechargeable solid state batteries (Ni-MH), fibre optics and others.
- Additionally, REE are vital elements in emerging technologies such as solid state fuel cells, superconductors, magnetic cooling, hydrogen storage and high performance permanent magnets.
Showing 1-2 of 2 items.
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