Aptitude tests are commonly used in competitive exams for several reasons:

1. Assessing Basic Skills : They measure fundamental skills such as numerical ability, logical reasoning, and verbal proficiency, which are essential for academic and professional fields.
2. Standardization : These tests provide a standardized method to evaluate the abilities of all candidates, ensuring a fair comparison based on a common set of criteria.
3. Predicting Success : Aptitude tests are designed to predict a candidate’s ability to succeed in future tasks, courses, or job roles. High scores often correlate with better performance in the relevant field.
4. Identifying Potential : They help in identifying candidates with the potential to excel in specific areas, even if they lack prior knowledge or experience in those areas.
5. Efficiency : Aptitude tests can quickly and efficiently screen large numbers of candidates, making the selection process more manageable.
6. Eliminating Bias : By focusing on objective skills rather than subjective factors, aptitude tests help reduce biases that might arise from interviews or other subjective evaluation methods.
7. Diagnostic Tool : These tests can diagnose strengths and weaknesses, helping candidates understand areas where they need improvement and aiding educators in tailoring their instruction accordingly.