IQ tests are employed to measure cognitive abilities such as memory, logical reasoning, and analytical thinking. The provided image contains a subtle error involving the max and min markings on the electric kettle which sharp-eyed individuals with high IQs can spot within five seconds. IQ tests are employed to measure cognitive abilities such as memory, logical reasoning, and analytical thinking. The provided image contains a subtle error involving the max and min markings on the electric kettle which sharp-eyed individuals with high IQs can spot within five seconds. Health and Fitness, Health Tips, Exercises & Workout Tips, Diet & Wellness | Times of India Lifestyle