Mensa Workout
Mensa is one of the world's largest high-IQ membership organizations. To become a member, prospective candidates must normally take a supervised test at a test center.
A person with an IQ in the top 2% in the globe is eligible to join Mensa, which has a variety of activities and groups for its members.
While they do not provide practice or online tests, the Mensa website does include an online workout. This is a set of 18 questions that are similar to those you might encounter on a supervised test and are designed to determine if you would perform well on the actual test.
The Mensa Workout questions feel easier than the actual Mensa exam, but they do give you a good indication of what to expect if you take the real Mensa exam. The site will also inform you if you are likely to achieve a high enough exam score to obtain admission to the Mensa organization.
Website: https://mensa.org.uk/online-workout/