The eligibility and admission criteria varies between universities. However for most of them you are eligible to apply for a BCA Programme having completed Class 12 from any stream and any recognized National or State board. However, in case their is any entrance test for admission to the BCA Programme like for IPU CET or AIMA UGAT, you may have to prepare relevant syllabus of Mathematics and Basic Computer Application by yourself from NCERT Books.

For more information do follow the link below

https://www.careers360.com/courses/bca-bachelor-of-computer-applications/amp