Hii!
The eligibility criteria for DU B.tech course 2021 states that the candidate must have passed class 12th with minimum 60% marks in best four subjects including mathematics from a recognised board of education. Also, admissions are provided on the basis of DUET entrance exam.
For more details, refer the following link -

https://www.google.com/amp/s/engineering.careers360.com/articles/du-btech/amp

Hope this helps.
Good luck!