 His contributions to various fields of chemistry included modification of cellulose and jute, electrochemistry, metal sulphides, non-metallic sulphur compounds, inorganic borates, organo-boron compounds, mineral processing, and analytical chemistry.Khundker was a Fellow of the Royal Society of Chemistry (FRIC) of Great Britain and Royal Society of Arts (FRSA), London.Khundker was a member of the sub-committee for Science and Technology of the Bangla Academy and chairman of the Paribhasa Committee for Chemistry of the Central Board for the development of Bengali.