B.Ed

You can opt for the same from one of these colleges:
Jamia Millia Islamia (Centre for distance & open learning)
Indira Gandhi National Open University
Dr. Babasaheb Ambedkar Open University
M.D. University, Dept. of Distance Education
Himachal Pradesh University,
Karnataka State Open University
Madhya Pradesh Bhoj (Open) University
Yashwant Rao Chavan Maharashtra Open University

Yes, you are eligible to pursue B.Ed.

Dear,
Since 2015, the duration of B.Ed programme is 2-years and the universities or institutes that offer you 1-year B.Ed programme are not recognised.
You can go for a biology related subject in Bachelors degree like life Science, zoology or B.Sc programme and then go for B.Ed programme
You can check this link to find out some recognized institutes under NCTE.
http://ncte-india.org/ncte_new/?page_id=803
All the best.

The various job types after completing M.Phil in English-
University or College Lecturer
Content Writer or Editor
Journalism
Translator
Copyeditor
Copywriter
Author
Account Executive
Account Supervisor
Assistance Editor/Production Editor
Broadcast Advertisement Manager
Columnist
Communication Skills Trainer

60% is needed but there are a lot of institutes with no percentage criteria.

Go for post-graduation in mathematics if you want to be a maths teacher after your B.Ed so as to became eligible for PGT mathematics.