Bachelor of Science, Panjab University, 1961. Bachelor of Science with honors, Panjab University, 1964. Doctor of Philosophy, University British Columbia, Canada, 1970.
Research associate, Ohio State University, Columbus, 1970-1971; research associate, NRCC, Otawa, Ontario, Canada, 1971-1972; lecturer, IIT, Kanpur, India, 1973-1977; assistant professor, IIT, Kanpur, India, 1977-1985; professor, IIT, Kanpur, India, since 1985.
Fellow National Science Academy, Indian National Science Academy. Member Indian Science Congress, Indian Society for Radiation and Photochemistry, Indian National Science Academy.
Married Sulekha Mahey, November 26, 1973. Children: Kalindi, Manu.