Dear Ashutosh,
Yes, NIOS candidates can apply for this entrance exam that is an entry to seats at more than 150 private colleges in Karnataka. The eligibility is the same as the regular candidates.
For more information, you can check the link below https://engineering.careers360.com/articles/engineering-entrance-exams-for-nios-candidates I hope this helps you!
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile