I remember you mentioning about your parents live in Nallakunta. You will get a book of past papers of Ramaiah entrance exam in a book stalls in Nallakunta. Ask them to buy and send it to you. That will help you know the paper.
As far as Ramaiah's entrance is concerned, it covers Maths, Physics, Chemistry and the standard would be CBSE & ICSE syllabus and helps if your son can check little of grade 11 syllabus also.
Also, a month before the exam, coaching centres around Nallakunta offer crash courses to Ramaiah's entrance exam.
Will send you the list of magazines this weekend.
Apart from Ramaiah, others also conduct eligibility test but just for namesake. Even if one doesn't get through, they are assured of a seat. But Ramaiah's is not like that.
If your parents cannot locate the bookstore, please inform me, I can get it and post it to you.I could have done it myself but very recently i moved to Hitec city and it is very far.