Dr. Chauhan is heading Centre for Aromatic Plants (CAP), Selaqui, Dehradun as a director since April 2017 earlier he was scientist-in-Charge in the same institution. He had worked as Assistant Director in Flavour and Fragrance Development Centre (FFDC), Kannauj (UP) from 1999 to 2002, Agriculture Research Officer in Pharmaceutical & Herbs Development Institute, Ranikhet from 1995 to 1999 and did research work in Central Institute for Medicinal & Aromatic Plants, Lucknow from 1989 to 1995. A total number of 10 projects funded by different funding agencies have been successfully executed under his guidance. Besides that, he is an author of 65 research papers, all of them published in international reputed journals, Technical Bulletins on aromatic crops. He is also an author of a book titled “Essential Oils, Extracts & Absolutes”. He has been honored as “Scientist of the Year” award by Essential Oil Association of India for the year 2010, for his outstanding contribution in development and propagation of aromatic Sector in Uttarakhand. Besides the above, he has published 43 research papers in reputed journals.