GK
NUCLEAR SCIENCE
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
0.1
|
|
|
1
|
|
|
3
|
|
|
12
|
Detailed explanation-1: -Large deposits of this type can contain more than 1, 000 individual mineralized veins. However, only 5 to 12% of the vein areas carry mineralization and although massive lenses of pitchblende can occur, the overall ore grade is only about 0.1% uranium.
Detailed explanation-2: -Natural Uranium – contains a 238U concentration of 99.27 percent, 235U concentration of 0.711 percent and very little 234U. Low Enriched Uranium – contains a 235U concentration between 0.711 percent and 20 percent.
Detailed explanation-3: -Uranium ore is found in the mineralized zone of Singhbhum Shear zone which is about 160 km in length and 1 to 10 km in width in the East & West Singhbhum Districts of Jharkhand. Rocks in the zone are highly folded and sheared. Uranium bearing minerals occur in very finely disseminated form.
Detailed explanation-4: -Where does it come from? U-235 and U-238 occur naturally in nearly all rock, soil, and water. U-238 is the most abundant form in the environment. U-235 can be concentrated in a process called “enrichment, ‘’ making it suitable for use in nuclear reactors or weapons.