Explanations:The question asks about a state in India where a nuclear accident took place. To understand this, it is important to know the locations of nuclear facilities in India and the history of nuclear accidents in these locations.
India has several nuclear power plants located in different states. The most significant nuclear accident in India occurred in Tamil Nadu at the Kalpakkam nuclear power plant. Kalpakkam is a coastal town in the Kanchipuram district of Tamil Nadu, and it is home to the Indira Gandhi Centre for Atomic Research (IGCAR) and the Madras Atomic Power Station (MAPS).
The nuclear accident at Kalpakkam occurred in 1991 when a small amount of radioactive water leaked from a storage tank. This incident, though minor compared to major nuclear accidents like Chernobyl or Fukushima, was significant for India's nuclear safety protocols and led to improvements in safety measures at nuclear facilities across the country.
It is important to note that while other states like Karnataka and Maharashtra also have nuclear power plants, they have not experienced any major nuclear accidents. Karnataka has the Kudankulam Nuclear Power Plant, which is actually located in Tamil Nadu, not in Karnataka. Assam and Delhi do not have any nuclear facilities, and thus, they have not experienced any nuclear accidents.
Understanding the locations of nuclear facilities and the history of nuclear accidents is crucial for students preparing for competitive exams, as it tests their knowledge of geography, current affairs, and general awareness. The Kalpakkam incident in Tamil Nadu is a notable event that should be remembered for its significance in the context of nuclear safety and the history of nuclear energy in India.