The admission is based on the merit of class 12th score.  there is no any entrance test  to apply . As this year the session is already over. As you didn't mention your desired course of interest to apply so I am providing you an article on DU admission & with other information you can go through with given below link.
DU Admission
Good Luck!

Hello!!
DU 2018 Eligibility Criteria - Requirements for Admission

1)Qualifying Examinations

Qualifying examination for DU admission 2018 to the first year of undergraduate programmes offered by the University of Delhi is the Senior Secondary School Certificate Examination (Class XII) of the Central Board of Secondary Education or any equivalent examination.

Applicants seeking admission to the programmes offered by the University should have passed the qualifying examination scoring minimum marks as specified for each of the programmes/ courses.

For some Boards which issue consolidated mark sheets containing marks of both 11th and 12th class, the merit of such applicants shall be determined according to such consolidated mark sheet.

2)Age Requirement:There is no minimum age bar for admission to the undergraduate programmes in the University and its colleges except in the programmes where the respective regulatory bodies, such as Medical Council of India (MCI), All India Council of Technical Education (AICTE), Bar Council of India (BCI), National Council for Teacher Education (NCTE), Dental Council of India (DCI), etc. have prescribed the minimum age requirement in their regulations.
For more information visit-

https://googleweblight.com/i?u=https://university.careers360.com/articles/du-eligibility-criteria&hl=en-IN
Have a good day.

Hey Rithik

Yes ,You can join delhi university after 12.The minimum percentage of your 12th grade boards that is required depends on the college you are aiming for. Some colleges ask for 98%, while others ask for as low as 60%.Delhi University looks at the scores of your top 4 subjects of 12th grade.

Thanks.

DU Delhi

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