How much marks should I score to get Aerospace branch in Any IIT
JEE Advanced maximum marks are not defined :
Maximum Marks vary every year like below:
2017- 366
2016- 372
2015 - 504
2014 - 360
So, it is difficult to predict marks as exam pattern and marks change every year but you should score more than 50% marks to get good branch in Top IITs.
Cut off for getting IIT general category in 2017 was more than 145.
You can check the cut off from the given below link-
Good Luck!!