B.Com

I think that application form will be out in April and exam will be conduct in may- June. Good luck.

On April 15, 2019 you firstly have to fill the registration form and go for entrance test, after which that you can get admission in DU if you fall in the merit list.

Admission Process
Register and Apply
Interested candidates can apply online/offline with the required information.
Skill Assessment Test
Eligible candidates( Minimum of 50% in their graduation) need to appear for the Skill assessment Test conducted by the university.
Personal Interview
Shortlisted candidates will be called for Personal Interview based on the score obtained in the Skill Assessment Test.
Final Selection
Candidates are selected based on 10, 12 and graduation marks, the score obtained in the Skill Assessment Test and Personal Interview.
If you satisfy the above criteria, then you can apply for the admissions in the college.

Yes, no doubt BSW is better choice as you wanted to prepare for Civil Services Examination. This course helps you to cover many basic aspects of Civil Services Examination syllabus rather than B.Com. Remember you need to start your preparation start from the first year of degree course. This will help you score more & pass the examination.

The admission start in the month of April. Classes will start most probably from June.

Admissions will start in the month of May- June.

Full time regular classes will be from 9:00 am to 5:00 pm as per the scheduled timings of college.

It purely depends upon the institution you have choose so choose and then explore. It depends upon the institution to institution what they prefer. All the best.

B.Com doesn't have mathematics as a subject, but you will still need basic mathematics knowledge to survive in B.Com. Good luck.