You can consider below point -

Academic Requirements -
10+2 (or equivalent) examination should have been completed by the applicants from the Gujarat Secondary and Higher Secondary Education Board, Gandhinagar/ CBSE, Delhi/ CISCE, New Delhi/ NIOS/ International School Board.
If the applicants have not completed their 10+2 examination but will complete it in 2017, then these applicants will also be eligible for admission.

So if you are from CBSE Delhi then you are eligible to get seat under GUJCET.

To know about the complete GUJCET eligibility criteria, you can go through the below article -

GUJCET Eligibility Criteria 2017

Good Luck!!!