Which of the following statements about nuclear fuel are correct? 1. Spent fuel is highly radioactive. ’ 2. Fuel has to be enriched. 3. Failure of the control system can lead to a meltdown. Select the answer using the code given below. | UPSC CAPF 2026 Q No 101

Accepted Answer: (B) 1,2 and 3

Topic Covered: Biology and Environmental Science

Key Concept: Ecology, genetics, biotechnology and life processes

The correct choice follows from the standard scientific definition or process involved. “1,2 and 3” matches the relevant biological, ecological, chemical or energy concept, while the alternatives conflict with the core principle.

The key is to apply the central fact, formula, definition or relationship tested in the question and then eliminate alternatives that do not satisfy it.