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 death anniversary of MS Subbulakshmi, the first musician to be awarded the Bharat Ratna, was observed on 11 December 2025?

India’s cooperative ride-hailing initiative, Bharat Taxi, has launched its pilot operation in Delhi and which other state?

In which of the following countries was the 7th session of the United Nations Environment Assembly (UNEA) launched?

On which of the following days is International Mountain Day celebrated every year?