Hello Aspirant,
NO, it is not necessary at all. See if you are seeking admission in B.Com (//B.Com) . Hons. in DU then you don't have to appear for DUET because DUET is conducted for courses like B.Tech., LLB, BBA/BMS, MA, MCA, M.Sc. and so on.
Admission to B.Com (//B.Com) Hons. is based on your class 12th merit and you have to directly apply for DU Admissions and there will be no entrance test instead you will be directly participated in counselling and the counselling is totally based upon class 12th merit.
Eligibility for B.Com (//B.Com) Hons. program offered in DU is "the candidate should have minimum aggregate score of 60% in class 12th with English/Hindi as main subjects and any three subjects from Mathematics, Accountancy, Economics and Business Studies"
For complete details about DU Admissions kindly check out the link given below :-
https://www.careers360.com/university/university-of-delhi-delhi/admission
For complete details about DUET kindly check out the link given below :-
https://www.careers360.com/exams/duet
I hope this information helps you.
Good Luck!!
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