Hiii, Congratulations on scorcring such good marks. But to answer your question no it is not possible to get direct admission in B.tech based on your 12th percentage.

You can enroll for the SRMJEE Knockout to prepare for the exam more effectively and smartly using the smart study material (which includes chapter wise, concepts wise, most asked and most difficult questions), Advanced Test Series based on SRMJEE Pattern (which includes unlimited chapter wise test, subject wise test and full mock test), adaptive time table, performance analysis (which includes Prepmeter, Strength Sheet, Weakness Sheet, Skills Graph) and Rank Predictor tool.

Go through the link below to check the details-

http://bit.ly/2IVrFlo

NO, you have write the exam and also they dont offer AI course in UG.