Indian Institute of Technology, IIT Bombay

Hello Vikas,
It's indeed quite good to hear that you are interested in aerospace engineering in IIT Mumbai. You need to take PCM subjects in your 12th exam and score minimum of 75% marks to be eligible. Then you need to clear JEE Mains and then JEE Advanced to get admission in this premier institute for studies in this branch.

For IIT-B, the cut-offs in the past few years have been between 1.5K and 2K for aerospace. The same has been ~2.5K-2.7K for IIT-K, and ~3K for IIT-M and IIT-KGP.
Regarding marks, scoring slightly above 50% of the max marks will surely land you with a rank close to 2k, which is sufficient for getting Aerospace at IIT-K, IIT-KGP, IIT-M but maybe not IIT-B.
Get around 1015 marks more, and you will nail IIT-B aerospace.

Hello Jithin,
The fees for the full course is about Rs. 8 lacs approx. But the institute offers different scholarships to deserving students. I am attaching a link that will give you all the required information:
https://www.shiksha.com/university/indian-institute-of-technology-bombay-mumbai-54212

Dear Student, above mentioned IITs are on top. Now it depend on you only which branch you are going to take. If you have decided any goal in your life then choose according to it only. All branch have good scope in job opportunities. Just listen to yourself only. Choose in which your interest lies. Best of luck.

Hello Arunima,
IIT Mumbai is an old hand in this branch and keeps itself updated on a regular basis. It's at the top of ranking for this branch. On the other hand, IIST is a new entrant but is supported by ISRO. This college too has good faculty. However, I would prefer IIT to IIST.

Hello Aarushi,
A rank of about 2000 in JEE Advanced would fetch you a seat. But this year, being a girl student, additional seats have been authorised and hence for girl students, the cutoff could be further lowered.
Best wishes.

Hi, It is very difficult to confirm the Rank as it varies every year. Please refer the link below for detailed information on Expert Tips To Crack JEE Advanced 2017:
https://www.shiksha.com/b-tech/articles/expert-tips-to-crack-jee-advanced-2016-blogId-12577.

Since you are interested in coding and want to learn computer skills Ism dhanbad case course will be good option for you.

You can check the previous year's category wise cutoff's ranks of these institutes at
https://josaa.nic.in/josaaorcrarchieve/Result/OpeningClosingRankArchieveN.aspx?Year=2017
and this year's 1 round counseling ranks at https://josaa.nic.in/webinfocms/Public/View.aspx?page=71.
Best of luck!

For that, you have to appear for the entrance exam and get a good score.