Ask your school/college to give you a copy of your hall ticket as Olympiad registration form fillup by school.They always have it as a backup.or contact the exam conducting authority as soon as possible. They will be able to guide you on the necessary steps to obtain a replacement or duplicate admit card.

Some fee receipt or something which you have as a trace of your id will help you.login with your credentials you will have the option to download admit card or hall ticket again get print out and appear for exam.

Hello,

To download your lost hall ticket for the CBSE Olympiad exam, follow these steps:

Visit the official website of the CBSE Olympiad or the organizing body.

Log in using your credentials, such as registration number or ID, and password.

Look for the "Download Admit Card/Hall Ticket" section.

If an option for a duplicate hall ticket exists, click on it and follow the instructions.

In case of difficulties, contact the exam helpline or your school authorities for further assistance, as they can guide you on reissuing the hall ticket.

Hope it helps !