Visualization techniques can aid in remembering facts for UPSC by creating mental images of information. Techniques such as mind mapping help organize thoughts and connect ideas, improving recall. Diagrams, flowcharts, and graphs can simplify complex data, making it easier to visualize relationships and trends. These methods engage multiple senses, enhancing memory retention. By associating facts with visual cues, aspirants can improve not only retention but also understanding, making it easier to retrieve information during exams.