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

Which of the following has become the first Indian to qualify for the 2026 Candidates tournament by winning the FIDE Circuit 2025?

In which of the following cities will the Global AI Conference be organized by the India AI Mission and IIT Madras?

Which death anniversary of Dr. Bhimrao Ambedkar, the principal architect of the Indian Constitution, was observed on December 6, 2025?

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