India

Hello Prasad,
Career will be too good in petroleum engineering. the oil and natural gas industry used to employ petroleum specialists from diverse fields like Mining, Geology and Chemical Engineering.But this industry now employs professionals trained in specialized Courses in Petroleum Technology.
One who has Professional Degree in Petroleum Technology under one's belt will find employment opportunities in government undertakings like Indian Oil, Oil India Limited, HPCL (Hindustan Petroleum Corporation Limited), BP (British Petroleum) and ONGC (Oil and Natural Gas Corporation).
Kindly refer to the link below for colleges providing Petroleum Engineering from Maharashtra:
https://goo.gl/M0MVA2
I hope this answers your question to your satisfaction. If so, kindly upvote this answer. If you have any further questions, kindly revert.

Hello Aayush,
Commerce and Science are the two broad categories. In commerce, you can go for arts/design, business, finance and banking. In Science, you have engineering and medical. Some new streams are also in demand nowadays like bio- tech, nano technology, agriculture and genetic.
Students are also moving in fashion designing and interior designing. We have B.Arch exam for such students. The research oriented students can go for KVPY and get into institutes like IISC and IISERs. Commerce students can also go for CA.
There are courses like mechanical/ electrical and computer Science in engineering to newer ones like hotel management and fashion designing. You can opt for any of these as per your interest.
I hope it helps. If so, kindly upvote this answer. If you have any further questions, kindly revert.