According to the percentage i.e 62% your CGPA should be around 6.5. re confirm your result and CGPA is out of ten.

Good luck !

As per the eligibility to apply for the exam you must have passed B.Sc. / B.Sc. (Hons) / BCA / BIT of minimum three years full-time from a recognized University with Mathematics/ Statistics as one of the subjects with minimum 60% marks or 6.5 CGPA on a 10-point scale as General OBC category. You can check the further eligibility with the given below link.

https://it.careers360.com/articles/nimcet-eligibility-criteria

Good Luck!