At which of the following locations is the 11th India International Science Festival (IISF) 2025 being held?

In which of the following states is the Dudhwa Tiger Reserve located, where the rainbow water snake was found for the first time in its buffer area? 

Which of the following states has become the first state in India to complete 100% digitization of its electoral rolls under the Special Intensive Revision (SIR) program?

Kalyan Chattopadhyay passed away at the age of 82. Who was he?

Which of India’s indigenously built nuclear-powered ballistic missile submarines is the INS Aridhaman?