M.Sc. Physics (Agra University, 1959); Research Scholar (Banaras Hindu University); Doctorate in Physical & Mathematical Sciences - Semiconductor Physics (Moscow State University, 1965)

Scientist (National Physical Laboratory - NPL, New Delhi); Assistant Professor and Head of the Solid State Physics Laboratory (Indian Institute of Technology –IIT-, New Delhi); Senior Research Associate, NASA Marshall Space Flight Centre, Huntsville, USA; Associate Professor, Middle East Technical University (METU), Ankara; Visiting Professor, Lancaster University, UK; R&D Manager, Solid State Physics Laboratory (SSPL) of the Defence Research & Development Organisation (DRDO), New Delhi; In-Charge, Quality Control of Remote Sensing Satellites, ISRO Satellite Centre (ISAC), Bangalore of the Indian Space Research Organisation (ISRO).

Counsellor (Science & Technology), Embassy of India, Moscow (1984-88); Advisor and Head, International Division, Ministry of Science and Technology of the Government of India (1988-2001); Coordinator, Indo-US Science & Technology Forum; Director General, Centre for Science and Technology of the Non-Aligned and other Developing Countries - NAM S&T Centre (2002 – Present)