Q. Which lake in Uttarakhand is called the Mysterious Lake?
Answer: Rupkund
Notes: Rupkund Lake is located in Chamoli district, Uttarakhand. It is known as the Mysterious Lake due to unexplained phenomena observed there. The lake contains skeletal remains found in the surrounding area, adding to its enigmatic reputation. It is distinct from other lakes like Nainital, known for its color changes, and Sattal, composed of seven interconnected lakes.