Rare Earth Element is a group of 17 rare metal elements found in the upper crust of the Earth. Rare Earth elements, unlike their names, are found abundantly on Earth, but their processing is very complex. These elements have better catalytic, metallurgical, atomic, electrical, and magnetic properties than other metals. And these elements share many similar properties, due to which it is very difficult to separate them from each other or to identify them separately. It's very important in the areas of technological development, space research, etc. today. Nature-friendly means should be searched for the processing of this so that there is minimal damage to nature along with the development works.
1. Mining and processing of rare soil elements causes large amounts of _____________ pollution.
A. Water pollution
B. Air pollution
C. Soil pollution
D. Thermal pollution
2. Which state rich in Rare Earth element material in India?
A. Gujarat
B. Rajasthan
C. Orissa
D. Keral
3. Rare Earth element used in which electronics equipment?
A. Smart phone
B. HD display
C. Electric car
D. All of the above
4. What is the approximate percentage of China's market share of REE at present?
A. 90 present
B. 94 present
C. 95 present
D. 99 present
5. Which red earth element has the highest reserves in Mongolia province?
A. Bastnasite deposits
B. Monazite
C. Lanthanide
D. Platinum
6. Rare soil elements have ____________ electrical conductivity.
A. High
B. Low
C. Zero
D. Negative
7. Which is the color of the rare Earth element?
A. Silver White
B. Silver
C. Gray
D. All of the above
8. Monazite is a mixed Rare soil is ........
A. Phosphate
B. Diphosphate
C. Triphosphate
D. Gunmetal
9. According to AMD, how many million tonnes of monazite sources have been discovered in India?
A. 11.90 million tons
B. 11.91 million tons
C. 11.92 million tons
D. 11.93 million tons
10. According to an estimate, the market of rare soil elements in India is more than how many thousand crores rupees?
A. 100 thousand crores
B. 90 thousand crores
C. 200 thousand crores
D. 250 thousand crores
11. Under what supervision in India is limited mining of rare soil elements?
A. Atomic Energy Regulatory Board
B. Erstwhile Indian Rare Earths Limited
C. Atomic Minerals Directorate for-- Exploration and Research
D. All of the above
12. Currently, in which area does segregation work by the Indian Government Enterprise Erstwhile Indian Rare Earths Limited?
A. Chavara
B. Manavalakurichi
C. Chhatarpur
D. All of the above
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