B.Com (Hons)

Hello,
Dyal Singh College, DU is definitely the best choice. Its AIR by MHRD's NIRF for 2018 is 25. All other colleges mentioned don't even find a place in the top 100 list except for Maharaja Agrasen College. Dyal Singh has better placements, internships, faculty and 'graduation outcome' and legacy! Choose this without a doubt.
PS- Ask me anything because I am the student of DSC itself. :)

Yes, you can, if someone in science stream. He or she may do commerce, arts and BBD is good for commerce.

Well, you have to apply for few of your selecting college, where you want to do B.Com and wait for their shorting. And, you will be notified shortly about their selection.

The admission date is yet not confirmed by Delhi University. After all the cut-offs and regular college admissions are over, it will be starting then only. You can stay in touch with us. For further information go and visit shiksha.com or Delhi University website.

Yes,
You can apply for it. Application to Delhi university courses at the certification level requires candidates to have passed CBSE's or 10+2 exam with a minimum aggregate of 45% marks.

Chandigarh University is the best option for B.Com (Hons) in and around Punjab, so you may get many great things if you join.
http://www.cuchd.in/international/undergraduate/b.com-honours.php

SSN is the lowest ranked college of Delhi University. For college there is no perfect mode of communication. SSN College is on the outskirt of the city and nearby the border of Haryana.
Much influence of politics can be seen here.
Satyawati College is 10 times better than Swami Shardanad College. So, I would suggest you to wait for the next cutoff.

For admission in B.Com (Hons) in any of Delhi University college, you have to study Maths in class 12th. Maths is a compulsory subject to be add up at the time of admission. Your marks will be calculated against the cut off released by Delhi University.
So, without Maths, you can't take admission in Delhi University colleges.

Yes, you can. Just apply for it.

Bachelor of Commerce (B.Com):
Eligibility:
The basic eligibility for admission to any of the B.Com programs is mentioned below. *Candidates must pass in Higher Secondary School examination from a recognised educational board
*They should have Maths and English as core subjects
*Minimum 50% marks are required at 10+2 level
*Although candidates from Science and Arts stream are also eligible to apply, those with Commerce stream are preferred
*There is no work experience required for the course.
However, students with work experience can also apply.