hey,

to take admission in B.tech engineering courses in institutes of gujarat through GUJCET , you are first required to meet the eligibility criteria of GUJCET that is candidate must have passed their 10+2 from recognized board with science stream and has physics and mathematics as compulsory subjects and any one among chemistry/biology/computer vocational course and candidate must have secured a minimum aggregate of 45 percent marks in their 10+2 there is relaxation of 5 percent for reserved category students.

for more information you may refer to the link mentioned below

https://engineering.careers360.com/articles/gujcet-eligibility-criteria

good luck!