Hi Ayush,

There is no necessity to study chemical engineering first to pursue your dream career in petrochemical engineering.

There are lots of colleges who offer BTech courses in that field as well.

Some  of them are:

• IIT Dhanbad
• INSTITUTE OF CHEMICAL TECHNOLOGY - [ICT], MUMBAI
• ANDHRA UNIVERSITY, COLLEGE OF ENGINEERING - [AUCE], VISAKHAPATNAM
• MITWPU Pune
• ACADEMY OF MARITIME EDUCATION AND TRAINING UNIVERSITY - [AMET], CHENNAI
• ZAKIR HUSSAIN COLLEGE OF ENGINEERING AND TECHNOLOGY - [ZHCET], ALIGARH
• RAJASTHAN TECHNICAL UNIVERSITY - [RTU], KOTA
• UNIVERSITY INSTITUTE OF TECHNOLOGY RAJIV GANDHI PROUDYOGIKI VISHWAVIDYALAYA - [UIT- RGPV], BHOPAL
• ALIGARH MUSLIM UNIVERSITY - [AMU], ALIGARH
• RAJIV GANDHI INSTITUTE OF PETROLEUM TECHNOLOGY - [RGIPT], RAE BARELI
• Jawaharlal Nehru Technological University College of Engineering, Kakinada

You can check other colleges who offer the course here:

https://engineering.careers360.com/colleges/list-of-petrochemical-engineering-colleges-in-india

Hope it helps,

All the best!

Hello Ayush, 

Yes you can take direct admission in B.Tech in petrochemical engineering. 

B.Tech Petrochemical Engineering is a 4-year undergraduate degree course. The admission eligibility asks for a pass in 12th grade with a minimum of 50% marks taken together in the subjects -

•Physics

•Mathematics

•Chemistry

The colleges that will offer you this course are -

1- Andhra University College of Engineering, Visakhapatnam

2- Jawaharlal Nehru Technological University

3- Rajasthan Technological University, Kota

4- BITS, Hyderabad

5- Aligarh Muslim University

If you would like take admission in IIT institutions then it is mandatory to pass the Joint Entrance Examination or J.E.E.

I hope this helped.

All the best!