Hey,
The minimum marks required in 12th to be eligible to get admission in IIT Madras or any IIT for that matter is atleast 75 percent(for Unreserved) and for SC/ST it is 65 percent.The candidates must have studied Physics,Chemistry,Mathematics in 12th.
For detailed information about the eligibility criteria of JEE Mains follow the link given below:
https://engineering.careers360.com/articles/jee-main-eligibility-criteria
The eligibility criteria to pursue Bachelor of Arts in English at Jamia Millia Islamia,New Delhi is to pass 12th from any stream with minimum 50 percent in aggregate from any recognised board. The admission is on the basis of the entrance exam.
Hope this helps.
Good luck.

Hello ameena most of courses in JMI the criteria for qualification is 55% .. you need to pass the entrance exam for that to qualify for the admission in JMI for B.A english 

For IITM you need to have done 12th standard and you need to have a english subject in your exam in 12th 

all the best

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