Delhi University (DU)

As your percentage is not so high, you can't get a government college but you can definitely get a private college.

These days a lot of labs are coming up which provide contract based research facilities to their customers, and they are demanding freshers to whom they'll train and hire, people can fetch jobs over there as well. Last but not the least if nothing works out academics will always have their backs.
Yes, but having a Master's degree after Bachelor's is highly recommend.

You can check on the official website:
https://www.shiksha.com/humanities-social-sciences/articles/delhi-university-du-entrance-exam-result-2018-blogId-17419

Not sure about the criteria for getting the hostel. Request you to visit the college and get an idea from the college officials.

In order to get all the necessary details about courses offered by SOL, please visit the following website https://www.google.co.in/url?sa=t&source=web&rct=j&url=https://sol.du.ac.in/course/index.php?categoryid=2&ved=2ahUKEwiv4eeUx_vbAhUDvY8KHVCNA6IQFjAAegQIBBAB&usg=AOvVaw0zzCPe_rlbGtHehfFQZM8B.

http://www.du.ac.in/du/uploads/Admissions/Cut-off/2018/3rd Cut-Off - Science Courses.pdf
The link of third cut-off. You can check whether seats are there for your category or not.
If no seats are available, then there might be a small chance that the seats are available again in the future cut-off lists.
Hope this helped.

Hello
Here i mention a link given below please visit on it
https://www.google.co.in/url?sa=t&source=web&rct=j&url=https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor&ved=2ahUKEwjGue-Wh_vbAhUK6Y8KHVA9D1kQFjAAegQIAxAB&usg=AOvVaw1N9BzFtyUCP4JU-2UQHQ0H

Admission in DU is based on the percentage of your top 4 subjects. Please check the cutoffs on the official site of DU for exact information.
Link: www.du.ac.in.
Refer the link for further details:https://www.shiksha.com/humanities-social-sciences/economics/course/b-a-hons-in-economics-st-stephen-s-college-north-campus-delhi-53266.