Hey there
For admissions into colleges of Delhi University you don't need to take any exam. You have to fill the Delhi University form from the official website and you will be short listed on the basis of your 12th marks in your boards.
Check the link
https://www.google.com/url?sa=t&source=web&rct=j&url=https://university.careers360.com/articles/du-admission/amp&ved=2ahUKEwiVoqushZXqAhW3ILcAHRvFDNUQFjAAegQIChAB&usg=AOvVaw19hIZ6mPqtubvFnNucm_TW&cf=1
Good luck
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