Biography: Dr. Mehdi Al Kausor is a Senior Assistant Professor in the Department of Chemistry, Science College, Kokrajhar. He has completed his Ph.D. degree from Gauhati University, Assam. His area of research is Photocatalysis & adsorption technologies in environmental applications using Graphene Oxide based Nanomaterials and Nanocomposites. His special paper is Physical Chemistry and he teaches States of matter, Electrochemistry, Phase as well as Chemical equilibria and Molecular Spectroscopy. He has published 10 research papers in web of science/scopus indexed & Other International Journals and three Book Chapters by International publishers. He is currently working as reviewer in many reputed International Journals.