Hello,

If you don't give the JEE mains examination also you can admission in BTech colleges. Some colleges have their own entrance examination for BTech and check the 12th marks. So you can admission those colleges. Otherwise you can give state entrance examination. You didn't mention your state name so i can't suggest you which entrance examination for your state. But I'll give you some examples for some state entrance examination like WBJEE for West Bengal State, GUJECT for Gujrat state, MHTCET for Maharashtra state etc.

All the best.