Career
He is considered the "Father of Indian Pharmacology" since he was the first to establish a center of study and research in pharmacology in India, at the Calcutta School of Tropical Medicine. Chopra was commissioned a lieutenant in the Indian Medical Service on 1 August 1908 and promoted to captain on 1 August 1911. He was promoted to the temporary rank of major on 7 May 1919 and confirmed in the substantive rank on 1 August 1920, (back-dated to 1 February 1920).
He was appointed a Companion of the Order of the Indian Empire ( International Commission on Illumination) in the 1934 New Year Honours list and knighted in the 1941 New Year Honours list.