Hey Sachin, You have scored 1840 rank and you also belong to OBC Category. Really that will be very helpful to you while taking admission in Government College as some special seats are being reserved for each and every special reserved category. With these marks, you can get admission in AIIMS but there might be some difficulty as nothing can be said about a particular AIIMS due to ups and downs in cutoffs but you can get a seat there. 

Good Luck

Hey Sachin. Congratulations for an amazing result. Yes with AIR 432 in obc category. You will for sure get into AIIMS. Since according to last year the cut offs for obc's is around 5500. Hence there is a very high possibility of you getting into aiims. Keep trying. Best of luck.