Languages

The students must have completed their 12th level of education or attained equivalent qualification from a recognised educational school board.
The students must attain a minimum aggregate score of 50% at the 10+2 level, with English as one of the main subjects (5% relaxation for SC/ST candidates).

Hi,
Yes, you'll get an advantage in the aggregate of best of four as you have PCMB which will give you 3% aggregate. As per the criteria of DU colleges, PCB/PCM+one language subject is compulsory with 55% marks.

UG Level: Candidates should clear class 12th in any stream with minimum 50% - 60% marks from a recognised board. It may be noted that humanities and social sciences eligibility criteria mentioned above might vary depending on the policy of the university or college in which a candidate is applying for admission.
I hope you will get a seat in English (H) your chances are high.
All the best.

You will have to include English in your best four subjects because you need to have English or any other language subject in your best of 4.

Yes, you are eligible for Ravenshaw University. This university conduct entrance exams for admission.

You should choose those 4 subjects in which you have scored best marks.