CUET

It varies from institution to institution, you can directly visit the sites and do accordingly.

Check out the link below :
https://www.shiksha.com/science/cucet-exam-syllabus

https://www.shiksha.com/science/cucet-exam-question-papers.

I think you have to put in a request letter along with the application -filled. It may be accepted subject to the existing demand.

Hello Harshini Raj,
Please refer to the official website of CUSAT where you may get previous year questions, however, I will suggest you purchase a previous years questions book which is readily available in the market.

It is very common among candidates that they are unknown to the way of a proper study. Most of the candidates don't know which subject they have to study and for how much duration, which is the scoring section, negative marking scheme, etc. Somewhere, it is also very important for the candidates to know their whole exam pattern prescribed by the official authority. Please refer to the link provided below for important preparation tips regarding the CUCET exam:
https://www.shiksha.com/science/articles/cucet-prep-tips-how-to-prepare-for-different-sections-of-the-exam-blogId-14719

I am sharing with you the link which has the previous year question papers in a PDF format. This will help you prepare better for your upcoming exams:
https://www.google.co.in/url?sa=t&source=web&rct=j&url=https://www.shiksha.com/science/exams/amp/cucet/question-papers&ved=2ahUKEwiNwOzaqdjaAhXIOI8KHRPuDd8QFjADegQIBhAB&usg=AOvVaw0eRU-THfbeEw8t2x7JBCPw&cf=1

Dear,
Simple search CUCET maths paper previous years where you can get maths paper easily.

Both are tough from their point of view. You need to work hard and refer many text books and solve many question papers so that you will get idea about that. So, do well and achieve the best.