If you have scored 150 marks in JEE Mains, it is almost sure that you would atleast be eligible to give JEE Advanced. Because the cutoff for the general catogery generally stays around 90-100, thus being quite difficult to cross 150. 
However, it depends on the question paper of the particular year.
Hope this helps

Hey Sagar,

150 marks in JEE MAIN is really good and Ofcourse you are eligible for JEE Advanced papers provided you should satisfying other criterias such as you should be born after Oct 1,1993 and this should be not your 3rd attemt.

Good Luck