Lady Shri Ram College for Women, University of Delhi

Refer the link for details: http://lsr.edu.in/cutoff-2017.asp

Lady Shri Ram college under Delhi University holds a higher ranking than St. Xavier's College, and Sophia college is on the last among these three.

No, you have to fill only the application form provided by DU on its website for UG admissions.

Yes, you can pursue any BA course, but your some marks are deducted when your best 4 subject percentage calculated. For information regarding deduction of marks, you can download the brochure of DU UG admission.

Yes. This college offers B.Com (Hons). and this college has many other courses related to different streams.
You can visit the college website for further reference.

No, to pursue this course, your 12th class percentage matters.
The cut off is matched with the best four subjects' marks. In the best four subjects, one language is included.
For further information, you can visit DU website.

Firstly, it depends on your category.
If you belong to general category, you can't get admission in any north campus college.
But you have a chance to get admission in off-campus colleges such as Satyawati Evening College,
Swami Shraddhanand College, etc.
For further information, you can visit DU website and have a look at the last year's cut-off.

Yes, sure. For other details, you may check the prospectus of MA English DU:
http://www.du.ac.in/du/index.php?page=m-a-english

Please refer the links to know about the detailed process: https://www.shiksha.com/humanities-social-sciences/economics/course/b-a-hons-in-economics-lady-shri-ram-college-for-women-lajpat-nagar-delhi-52368
https://www.shiksha.com/humanities-social-sciences/economics/course/b-a-hons-in-economics-shri-ram-college-of-commerce-maurice-nagar-delhi-110682

Yes, you can because eligibility to MA in English is:
Minimum 50 percent in Bachelor's degree from a recognized University.