Q. Which among the following has the world's largest reserves of Uranium?
Answer: Australia
Notes: Australia possesses the world's largest known uranium reserves, accounting for approximately 28-31% of global reserves. The country's uranium deposits, primarily in the Ranger, Olympic Dam, and Beverley mines, exceed those of any other nation. While Canada and the Russian Federation have significant uranium resources, Australia leads due to its extensive, economically viable uranium formations mainly in Northern Territory and South Australia.