Hello suraj.
You should give exam based on engineering, such as jee mains for government engineering colleges or like vit ,mit srmjee,kiit or any type of exam to join private engineering colleges..

Bhai mat kar engineering... Life barbaad  ho jayegi

Hello Suraj,
You should drop a year and join a good coaching institute. Joining coaching institute is not much necessary if you think that you can prepare by yourself also but you must have to join a test series and should take packages of a coaching institute.