IIT

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.

IITs and NITs do not offer degree courses in mechatronics.

Diploma holders in engineering are eligible to appear for Joint Entrance Examination(JEE) conducted by IIT for admission in engineering at IITs and other engineering colleges.

In which field you are interested? You can choose either engineering or medical, so try to clarify your position, and secondly, placement does not only depends on your academic records. It mainly depends on your knowledge of the subject. IITs and NITs are the best brands in India, and also play an important role in shaping the future, but employment does not depend only on brand, it only depends on your capabilities.