Which one of the following countries is known for very important uranium ore deposits?

The correct answer is A) Canada. Canada's Athabasca Basin in Saskatchewan holds some of the world's richest uranium deposits, such as Cigar Lake and McArthur River, which are known for very high ore grades. Canada has long ranked among the top uranium producers. Kazakhstan has overtaken it in recent years, so if the question were framed today the ranking would need updating, but the deposits remain famous.

• B) China has uranium resources, but they are comparatively modest and mostly lower grade. China also depends on imports to meet its reactor needs.
• C) Pakistan has no major uranium ore deposits of global significance. Its nuclear fuel needs have largely been met through imports and its own limited production.
• D) Zaire is the trap. The Shinkolobwe mine in the present-day Democratic Republic of Congo (the country was called Zaire until 1997) was historically important and supplied uranium during the Manhattan Project. That mine has been exhausted and is no longer a major source.

The core concept is the geography of atomic minerals. The Atomic Minerals Directorate under the DAE explores uranium in India, and Indian uranium mining at Jaduguda and elsewhere links this to energy security and nuclear power policy, a recurring Mains theme.

Trap: Choosing Zaire because of its historical link to a famous mine, rather than the country with the largest present-day reputation for high-grade deposits.