IIT

You may consider following options for engineering based on criterion of good placement and low fee: Delhi Technical University, Anna University Chennai, NSIT Delhi, College of Engineering Pune, Jadavpur University .

You can get job in USA after gaining few years of experience after MBA subject to visa availability. As a fresher it may be difficult to get job in USA after MBA.

Yes, I think that it would very useful if you solve old year's IIT papers. But, I also think that you should try some other questions which are related with your topics. You should also solve other entrance exams papers. It will be very useful to know which types of questions are asked in the entrance exam.
Best of luck.

Narayana Coaching Institute is the best option for the preparation of JEE Mains and PMT exams.

Hi,
ISRO recruits engineers from computer, mechanical and electronics stream mainly. For more details, take a look at the following link:
http://www.isro.gov.in/careers

IIT JEE is a single - stage objective type examination consisting of two papers of three hours duration each to test comprehension & analytical ability of candidates. Both papers, Paper-1 and Paper-2 will each have three separate sections on physics, chemistry & mathematics.
All questions will be of objective type, designed to test aptitude, comprehension and analytical ability of the candidates.

IIT JEE is a single - stage objective type examination consisting of two papers of three hours duration each to test comprehension & analytical ability of candidates. Both papers, paper-1 and paper-2 will each have three separate sections on physics, chemistry & mathematics.
All questions will be of objective type, designed to test aptitude, comprehension and analytical ability of the candidates.

You need to score more than 230 marks in JEE Mains to get admission in NITs or IITs.

There is no restriction. You can appear for IIT-JAM exam for n number of times.