For becoming a mechanical engineer you need to do graduation from a designated college and get an engineering degree like B.Tech or B.E.

To get up in any engineering college you need to pass out your 12th standard exams and appear in one of the many exams like IIT-JEE or state exams like PET, UPSC. There arecalsi many reputated private colleges which conducts their own exams like BITS.

So clear up the exam and while getting an admission select mechanical branch. Then for next 4 years you need to study hard clear all the exams and get your degree. After doing this you will be recognised as a a mechanical engineer and you can apply in different companies which requires or offering post for mechanical engineer.

All the best for your preparations and exams!!

By getting into one of the numerous engineering college & then studying