CLAT is the National level exam for the admission Five years Integrated programme ( BA LLB, BBA LLB, BCom LLB) to get into 21 NLUs. As per the eligibility you should have minimum 45% in 10+2 as a General Category & 40% as  a reserved category. You can check the complete information about with the given below link.

https://law.careers360.com/exams/clat

You can check Law colleges of Ahemdabad with the given below link.

https://law.careers360.com/colleges/list-of-law-colleges-in-ahmedabad

Good Luck!