Hi Dipak,

As you mentioned you are pursuing Petroleum engineering, I would suggest you to write GATE exam as it is related to your domain. And you can grab a PSU if score good marks. You can have two attempts to write the exam, one in third year and next in the final year. Or you can go to any IIT or any other good college to pursue M.Tech, if you are not interested in government job. To know more about Gate, visit here:

https://engineering.careers360.com/articles/gate

UPSC is Union public service commission which conducts exam for recruitmemt of civil services officers such as IAS, IPS, IFS, IRS etc. UPSC exam is comparatively difficult than GATE exam. And you can write UPSC exam as many as times between the age of 21-32 years. You will have plenty of chances to clear this exam. To know more about UPSC, visit here:

https://competition.careers360.com/exams/upsc-civil-services-exam

Thankyou!