For GUJCET, the candidates should have qualified 10+2 or equivalent examination from Gujarat Secondary and Higher Secondary Education Board, Gandhinagar/CBSE Delhi/CISCE New Delhi/Nios. But diploma is after 10th right? And is not same as 10+2. Gujcet is for admissions into B. Tech/B.E. because you studued diploma already you are eligible for lateral entry into 2nd year B.Tech/B.E. gujcet is not for lateral entry.