Terms of use.

By creating an account or using sublevo.app you agree to these terms and to our privacy policy. If you are under 18, a parent or guardian should read and agree to them with you.

Sublevo is a free, independent study tool for ISC Class 12 Physics, Chemistry and Mathematics: board questions with their sources, chapter notes, practice and revision tools. We may add, change or remove features and content as the syllabus and the product change.

• Give a real email address you can receive mail at.
• Keep your password to yourself. One account is for one person.
• You are responsible for what happens under your account.
• If you think someone else has got into it, reset your password and write to support@sublevo.app.

You can stop using Sublevo and ask us to delete your account at any time.

Board questions, marking schemes and examiners’ comments are reproduced from papers published by the Council for the Indian School Certificate Examinations (CISCE) and remain CISCE’s copyright. Each one links to its source. Sublevo is not affiliated with, endorsed by, or approved by CISCE.

Everything else — the chapter write-ups, the marks-per-paper analysis, the tools and the design — is Sublevo’s. Questions labelled Practice are not board questions. More on this on the Help page.

You may use Sublevo for your own study, and share links to it freely.

You may not:

• copy, scrape or bulk-download the library, or republish it elsewhere;
• sell or rent access to your account, or share it with others;
• try to get into other people’s accounts or data, or probe the service in ways that could harm it — if you find a weakness, please report it instead (see Security);
• overload, disrupt or interfere with the service;
• use Sublevo for anything unlawful.

We may suspend or close an account that breaks these rules.

We check official questions against the source PDF and label everything that is not official. Even so, mistakes happen — if you find one, tell us and we will fix it.

Sublevo is a study aid. It does not replace your teachers, your textbooks or CISCE’s own publications, and we do not promise any exam result. The service is provided “as is”, and we cannot guarantee it will always be available or error-free.

Sublevo is free. To the extent the law allows, we are not liable for indirect losses, or for any loss arising from reliance on the content or from the service being unavailable. Nothing here limits a liability that cannot be limited by law.

If you own material on Sublevo and want it changed or removed — including CISCE — write to support@sublevo.app with the page address, and we will act on it promptly.

We may update these terms; the date at the top shows when. If a change is significant, we will say so in the app before it takes effect. These terms are governed by the laws of India.