Engineer exams

Do some research on colleges based on your expected score. And also try to know more about different branches.
Visit https://www.shiksha.com for regular updates.

JEE Mains and Advanced are the major entrance for entry into top engineering colleges. Conducted by CBSE every year.
Kindly check its official website www.jeemain.nic.in

Automobile Engineering is a branch of engineering which deals with designing, manufacturing and operating automobiles. It is a segment of vehicle engineering which deals with motorcycles, buses, trucks, etc. It includes mechanical, electrical, electronic, software and safety elements.
Some best colleges:
IIT
DCE
IT BHU
Aeronautics is the science or art involved with the study, design, and manufacturing of air flight capable machines, and the techniques of operating aircraft and rockets within the atmosphere.
Some best colleges:
IIT
Bits Pilani

You are eligible for JEE and GGSIPU entrance exams. Beside you are eligible to apply in allmost all state exam as external candidate and will be eligible for 15% non state quota seats.

You should prepare for JEE.

JEE for admission to IITs, national level exams for admission to NITs, BITS, Entrance examinations conducted by deemed universities, state level entrance tests for admission to state and private engineering colleges, entrance tests for admission to universities like Cochin University etc. are some of the entrance examinations conducted in the country foe admission to B Tech/BE programmes