• Tata Institute of Fundamental Research, Mumbai 1959-73 in various capacities

• Raman Research Institute, Bangalore 1973-84 as Associate Professor

• Indian Institute of Science, Bangalore 1984-98 as Professor and Head, Sophisticated Instruments Facility

• Vice-Chancellor, University of Allahabad (1998-2001)

• Distinguished Professor, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow (2001-2006)

• Director, Centre of Biomedical Magnetic Resonance (CBMR), Sanjay Gandhi Post Graduate Institute of Medical Sciences Campus, Lucknow (2001-present)

• NMR of Oriented Systems for the study of molecular structure and function

• Developments of novel techniques in NMR

• Applications of NMR imaging and spectroscopy for biomedical applications with emphasis on disease diagnosis, treatment monitoring and human behavior studies

• 1981, Elected Fellow of the Indian National Science Academy, New Delhi

• 1982, Awarded Prestigious S.S. Bhatnagar Award in Chemical Sciences

• 1983, Key-note Speaker, 8th International Conference on MR, Chicago, USA

• 1984-1994, Member, Governing Council, International Conference on MR in Biological Systems

• 1984, Elected Fellow of the National Academy of Sciences, Allahabad

• 1984, Scientific Secretary, XI International Conference on MR in Biological Systems

• 1985-, Member, Management Committee, TIFR NMR Facility, Mumbai

• 1986, Plenary Speaker, 9th International Conference on MR, Rio-de-Janeiro, Brazil

• 1986-1995, Member, Governing Council, the International Society of MR

• 1989-1996, 2001, Member of the Council of the National Academy of Sciences

• 1990, Dr. Jagdish Shankar Lecture Award, INSA, Local Chapter, Mumbai

• 1990, R.K. Asundi Lecture Award by INSA

• 1990-1992, Secretary General International Society of MR in Biological Systems

• 1991, Bawa Kartar Singh Lecture Award, Panjab University, Chandigarh

• 1992, President, Physical Sciences, Annual Session, National Academy of Sciences

• 1993, Convener, 63rd Annual Session of the NASI, India

• 1994, President, Chemistry Section, Indian Science Congress

• 1996, Awarded C.V. Raman Award, UGC

• 1996, Awarded Goyal Prize in Chemical Sciences

• 1996, Member, Internat. Adv. Board, 16th International Liquid Crystals Conference, Kent, UK

• 1995-1998, Founder President of the National Magnetic Resonance Society, India

• 1997, Sahstrabudhey Award, Nagpur University

• 1998, Member, Management Committee, NMR Research Center, IISc, Bangalore

• 1998, J.C. Ghosh Lecture Award, Indian Chemical Society

• 1998-2001, Member, Governing Council, IUCA, Pune

• 1998-2001, Member, Governing Council, Nuclear Science Centre, New Delhi

• 1998-2001, Member, Governing Council IUC, Indore

• 1999-2000, Vice-president, National Academy of Sciences, Allahabad, India

• 2001-2004, Member SERC, DST, New Delhi

• 2001-2004, Member, Governing Body, CSIR

• 2001-2004, Member, CSIR Society, New Delhi

• 2001, S.N. Ghosh Lecture Awardee, Allahabad University

• 2002-, Member, Central NMR Facility, IIT Roorkee

• 2002, Awarded P.C. Ray memorial medal, ISCA

• 2003-, Member, Governing Council, CLRC, Bangalore

• 2004-, Vice Chairman, Chemical Sciences, RAB, CSIR, New Delhi

• 2005, N.R. Dhar Memorial Lecture Award, NASI

• 2005, Life-time Achievement Awarde, the Indian Chemical Society

• 2006, Member, International Advisory Board, 16th Triennial Conference of the International Society of Magnetic Resonance