India

National Institute of Criminology & Forensic Science runs in affiliation with GGSIP University Delhi M.Sc Forensic Science two years degree course. It is the best option in the field of Forensic Science.

Top universities for law are:
University, Bangalore (www.nls.ac.in)
WB National University of Juridical Sciences, Kolkata (www.nujs.edu)
NALSAR University of Law, Hyderabad (www.nalsarlawuniv.org)
National Law University, Jodhpur, (www.nlujodhpur.ac.in)
Campus law centre, Delhi (http://clc.du.ac.in/)
UPES, Dehradun (www.upes.ac.in)

All engineering exam required 60% in class 12th with PCM subjects.

All private and government colleges take admission through LEET score, so you can try in all.

Hello Umair,
It would be great if you complete your Masters. Then it will be easy for you to get a job in such big companies. To get a job in these giants, you need to work very hard.

Yes, you can do your Masters in aerospace engineering from USA.

The cutoff shall be above 500+. Fees can be contacted with the admission committee of the college as it varies from year on year.

Yes, it can cause a problem. To know about accountancy or to make your career in the same, you must opt for:
(a) HSC in science with maths (b) I.Com or you must be a graduate in (a) Science with maths (b) commerce (c) engineering in any of the streams. If possible try to pursue B.Ed, if you want to make your career in teaching, you may prepare for Banks P.O, SSC, UPSC, etc.

It is rare but few PGDM students from top 10 B-Schools are able to get direct job abroad in campus placement.