Hello Samant 

For appearing JEE Main you must have secured 50% in aggregate in the qualifying examination or 10+2 for General Category. However for others like Sc, St, Pwd category student you must have 45% in the qualifying examination. Apart from this you must have done or 10+2 from a recognised state or central board pf India. You must have studied Physics, Mathematics, Chemistry in your 10+2. Hope this helps.

Thank you.