Students appearing in private for class 10 and 12 board exams can download their admit card or intimation letter from the CBSE official website –

https://cbseonline.ernet.in/pvtform/pvtAdmCard.aspx

The admit card will have the details of the exam dates along with the venue mentioned on it. The board exam of the candidates appearing through private mode will be conducted at the exam centre only.

Candidates will be required to carry a valid ID proof, admit card and a photograph with them to the examination hall. No candidate will be allowed to appear for the exam without the security check.

From the academic year 2019 the students will need to score a minimum of 33% marks in theory and practical combines to be declared pass in the subject.

Source:https://indianexpress.com/article/education/cbse-10th-12th-admit-card-released-for-private-candidates-direct-link-5547877/