hey there,

for ahemdabad university the eligibilty crieria is:

you should have cleared jee mains and scored least 60% in 12th with science stream.

you check out the link below for detailed information regarding colleges in gujarat. The chances of getting goverment college is pretty less but you get some private colleges maybe.

https://www.shiksha.com/b-tech/ranking/top-computer-science-engineering-colleges-in-gujarat/46-2-109-0-0