Congratulation for getting 84percent in 12th 

Dear aspirant 

There is two way 

One way is you can  give jee mains exam  by preparing one year and if you will select in this exam you will get admission in India's good eneginnring colleges. 

And second way is if you don't want to prepare for jee mains and Don't want to invest your one year in jee mains so you can fill forms OF state level colleges from which you will get state level government college. 

Such as IN rajasthan you will have to fill REAP form for getting admission in RTU affiliated and other colleges.

Thank you