Hi Harshit,
Vellore Institute of Technology is conducting their common entrance test for the admission in various courses at the various campuses of VIT university. They will be conducting an online CBT(Computer Based Exam) exam of 2 hours 30 minutes. You need to be familiar with the various sample papers and have strong command over the topics mentioned in syllabus, for which NCERT will be helpful for building strong base. The sample papers will give you a gist of the pattern of questions.
You can aslo refer to the books of DC Pandey and HC Verma for Physics, RC Mukherjee and OP Tandon for Chemistry, AD Gupta and RD Sharma for Mathematics.
You can also refer to https://engineering.careers360.com/articles/viteee-2020 for more related information.
All the best!
Feel free to contact for any further queries.