To get admission in B.Tech in CSE branch, you can give exams like IIT-Jee which is a national level exam and if you clear it with required score then you will be eligible to get into IITs, NITs, IIITs,GFTIs, GUJCET (state level entrance of Gujarat because you belong to that state only) and private exams like BITSAT, VIT, SRM, Manipal etc. Also, I would suggest you to appear in maximum number of entrances as per the eligibility because more number of exams will make you eligible to get more college options at the end.

To know more about Engineering entrances, you can visit the below given website -

https://engineering.careers360.com/

Hope this helps!!!