About Velnov

What you will find here

Velnov currently has 5,400 practice questions across 9 subjects (600 per subject), and 420 maths formulas organised into 10 topics.

How a topic page works

Every topic has its own study-notes page. Instead of showing only the correct option, each question is written out in full with:

• all four answer choices, with the correct one highlighted,
• an explanation of why that answer is right — and, where it helps, why the other choices are wrong,
• a difficulty level (easy, medium or hard) so you can start simple and build up,
• the key concepts the question tests, listed at the top of the page.

When you feel ready, you can take the same topic as a timed interactive quiz. At the end you get your score, the time taken, and a review of every question you got wrong, together with its explanation.

Maths formulas, explained twice

The formula reference groups formulas by topic rather than by class, so all of trigonometry (or algebra, or mensuration) is in one place, from the basics up to Class 12. Each formula comes with what every symbol means, a worked example, and two short explanations: where it is used in real life, and what it means in plain words. A scientific calculator is built into the site for checking answers.

Who Velnov is for

• Primary school children (Class 1–5) practising maths and English grammar, ideally with a parent or teacher.
• Middle school students (Class 6–8) revising physics, chemistry and biology chapter by chapter.
• Exam aspirants revising ancient Indian history.
• Beginners learning to code who want to check their understanding of Python, JavaScript or SQL one concept at a time.

Free to use, privacy-friendly

Velnov is free and does not require you to sign up or share any personal information. If you take quizzes, your recent scores are saved only in your own browser so you can see your progress — they are never sent to us. The site is supported by advertising shown on the study-notes and formula pages. There are no ads inside the quiz app, and none on the Class 1–5 Mathematics and English pages. See our Privacy Policy for details.

Found a mistake?

We want every answer and explanation to be correct. If you think something is wrong or unclear, please contact us with the subject, the topic and the question number (for example, "Physics · Topic 3 · Q12"), and we will check it and fix it.