I passed my 12th from Kendriya Vidyalaya, Pune in the yr 2013. Unfortunately I got just 73% in my 12th Boards. At present I am not pursing any higher studies. I want to give JEE (Mains & Advanced) 2014. And also the Improvement exam. My question from u are :-
1) Do I have to give exam for all 5 subjects which I had in 12th or giving exams for the one in which i have not performed well will do?
2) From where do we have to fill the form? What is the procedure to fill form for Improvement exam?
3) What is the last date for filling form?
4) If I get less marks from the earlier marks then can I go for the earlier marks for JEE (Mains and Advanced) ?

Please answer my question and help me...