Man Sharma has made important contributions to the understanding of the dynamics of multiphase reactions in industrial processes, and for the promotion of the science of chemical engineering. His early definitive work with Peter Danckwerts on the catalysts of the reactions of carbon dioxide and carbonyl sulphide with aqueous alkalis set the course for a series of similar research undertaken into liquid–liquid, liquid–solid and gas–liquid–solid reactions, leading to equally definitive frameworks for understanding the dynamics of these types of reaction. Using the insights so developed, he invented novel methods of accelerating such reactions or rendering them more selective by employing emulsion, micellar or hydrotropic additives. He has been recognised in India by a number of awards, culminating in the Padma Bhushan.