CBSE 12th

You have to clear JEE Mains exam with approximately 250 marks or above and then face Advanced exam. You should have AIR less than 500 in JEE Mains and less than or between 600-700 in JEE Advanced to get admission in IITs. You should have above 90% marks in 12th standard.

To get admission in engineering colleges there is criteria for both exams having 60:40 or 50:50 ratio of JEE Mains to PCM marks of 12th. The total of the same is called as composite score.

Yes, you can pursue CSE/ Aeronautical Engineering at this percentage. Only thing is you won't be getting IITs. Because IITs ask for 75 % above in 12th. You can get admission in other state private/public engineering colleges.

Choosing engineering stream depends on your interest. Look for your field of interest and then select that stream offered by the best college which you can get based on your scores.

You can expect a call for GD/PI considering your score.

Hi Amrit
You can look at the following options to study in the field you desire:
1. New York Film Academy.
2. Vancouver Film School.
3. FTII - Pune. www.ftiindia.com
4. Institute of Creative Arts. www.icebalaji.com
However, remember that for FTII you have to first finish graduation and also have a decent portfolio of dramatics performance. If you have any other questions you can ask me
If you like my answer you can upvote it.

The cut-off of admissions changes every year.
Last year, the cut-off was:
CAT - 86 percentile,
CMAT - 96 percentile and
XAT - 78 percentile.
For more information refer brochure:-
https://www.somaiya.edu/media/pdf/PGDM_Admissions_Brochure_2017-19.pdf .
Online Application Form:-
http://simsr.somaiya.edu/simsr/adm/pgdm17/onlineform/login.aspx .
FAQs:-
https://www.somaiya.edu/media/pdf/FAQ_2017-19.pdf.
Placement Report:-
https://www.somaiya.edu/media2/pdf/Placement_Report_2015-16.pdf .

No, the minimum cutoff is 75+. All the best for your future endeavours.