| Consider the following statements. |
| 1. Natural uranium consists of 100% U-238. |
| 2. The fission process by which heat energy is released in a nuclear reactor, takes place mainly in |
| U-235. |
| 3. Nuclear power plants require fuel with U-235 enriched upto a level of 10%. |
| Which of the statement(s) given above is/are correct? |
A) 1 and 2
B) Only 2
C) 2 and 3
D) All of these
Correct Answer: B
Solution :
[b] Natural uranium consists primarily of two isotopes, 99.3% is U-238 and 0.7% is U-235. Most nuclear power plants require fuel with U-235 enriched to a level of 3-5%. To increase the concentration of U-235, uranium must be enriched.
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