I will pass 12th by 80% hopefully, is there any graduation for 1 or 2 year because I want to be an I.A.S at early age

Hello firstly you should go for graduation. In between graduation you start preparation for IAS .You can also join top coaching institute for better preparation. Coaching institute provide better study material and clear study concept. I think you are satisfied from my answer thanks best of luck

There is no such stream.

No graduation is minimum three year degree