Which engineering branch uses organic chemistry?

In most Indian colleges, organic chemistry is part of the first year mandatory curriculum, which is the same across all B.Tech branches. Other than that, some colleges offer Organic Chemistry as an elective in the Chemical Engineering curriculum. 

Chemical Engineering is more concerned with optimizing and increasing the productivity of a process, and less with the reaction mechanism part. Despite this, organic chemistry is present in some CE subjects in parts. These subjects are Petroleum Engineering, Biochemistry, and Chemical Process Technology. Across the globe, and not just in India, Organic Chemistry is a part of the Chemical curriculum, even if not directly.