1990 (10th) International Symposium on Environment pollution; June 7 – 8, 1990 (Toronto, Canada); (Trip financed by UGC, DST and INSA).
XVIII IACS International Conference on Canadian Studies; Recent trends and future directions, 24-28 Feb., 2002, Gurukul Kangri Vishwavidyalaya (Convener, Registration and Accommodation committee).
International Vedic conference, Haridwar, Jan 27 – 30, 2005 [One original Research paper was presented]
International conference on Allelopathy at H.A.U., Hisar [23-25 August, 2004] [Presented a Research paper and acted as Chairman of one academic session]
“Be a sustainable world with energy Technology” – An Intrnational conference of International Energy Forum sponsored by Ministry of commerce, Industry and Energy, Organised by Korea Institute of Energy Research, South Korea at Riviera Hotel, Daejeon, South korea [September 6, 2007]
Climate change-Seoul International Forum – An International conference sponsored by ministry of Science and Technology and CDRS (Carbon dioxide removal and sequestration station), South korea and held at Imperial Palace Hotel, Seoul, South Korea [September 12, 2007]
46th Conference of Korean Society for Atmospheric Environment, Seoul, held at Sejong University, Seoul from 24th April to 26th April, 2008, PE-1, page 601-603, (2008).
International conference on Recent Advances in Environmental protection, Paper accepted and invited for paper presentation, during December 17-19, 2009 at Agra.
International Conference on Green Technologies for Greener Environment, from jan 27-30, 2010, organized by Department of Chemistry, C.C.S. University, Meerut, [Delivered one invited lecture, Chaired two academic sessions, Acted as judge in one poster session, invited as guest of honor in valedictory session. 03 papers presented in poster session. One paper judged as best poster].
Symposium on traditions of Vedic mathematics and application (19th Dec. – 22 Dec., 1998), Gurukul Kangri Vishwavidyalaya (Convener, technical session committee).
International conference on History of Mathematics (16 Dec. – 19 Dec., 1999), Gurukul Kangri Vishwavidyalaya (Convener, technical session committee).
National seminar on History of Mathematical sciences and applicable Mathematics. (07.03.2003 to 09.03.2003), Gurukul Kangri Vishwavidyalaya, Haridwar, (Member, Organizing Committee).
37th Annual Convention of Chemists; Nov. 15 – 18, 2000 (Gurukul Kangri Vishwavidyalaya), Abs. PHY (OP) –55 (2000) B 10 and Abs. PHY(OP) –54 (2000) B 10 (Acted as Local Organizing Secretary, Convener - Inauguration committee and Souvenir committee, member- Reception committee, Editor- Souvenir)
Refresher course for University and College Teachers, Gurukul Kangri Vishwavidyalaya, Haridwar, 2003. DELIVERED LECTURE on Thermodynamics of living systems.
Global conference of Indian Science Congress (Ahmedabad, Jan. 3-7, 2005) [Two research papers were presented, One session was chaired, and One Invited Lecture was delivered]
Global conference of Indian Science Congress (Hyderabad, Jan. 3-7, 2006) [Two research papers were presented, Two sessions were chaired, and One Invited Lecture was delivered, Acted as Judge for best poster award, elected as sectional committee member for 2007]
National conference on Electrodics & Electrode Kinetics, Gwalior, Nov. 25-27, 2005 (Delivered a lecture, chaired one session)
Conference of Indian Science Congress (Annamalai University, Jan. 3-7, 2007) [04 research papers were presented, One Invited Lecture was delivered, Acted as sectional committee member]
27th Annual Conference if Indian Council of Chemists, Gurukul Kangri University, 26-28 Dec, 2008, [Acted as Convener of Conference, 10 papers presented]
Symposium on Medicinal Plants of India, organized on 27th Dec, 2008 (Acted as Convener).
Refresher Course for University and College teachers, organized by Academic Staff College, Kumaon University, Nainital, 2008-09. Delivered 04 invited lectures.
National Workshop on Green Chemistry, resent scenario in India; Education and Application, Dec. 11, 2009, organized by Department of Chemistry, A.N.D.N.N.M.M., Kanpur. Delivered an invited talk and Chaired one session.
INSPIRE programme of Department of Science and Technology, Government of India, held at H.N.B. University, Srinagar (Garhwal), Jan 11-15, 2010. [Delivered two invited lectures.]
Work shop on “PARYAVARAN HITESHI PRADUSHAN RAHIT PRODYOGIKI”, Jan 29-30, 2010, held at C.C.S.University, Meerut. Organised by “Vaigyanic tatha Tachniki Shabdavali Aayog, Higher Education Department, Ministry of Human Resources Development, Government of India. Chaired two academic sessions, Presented and invited lecture in Hindi.
National Seminar on Analytical Electrochemistry, Feb 8-10, 2010, Organised by Department of Chemistry, JNV University, Jodhpur. Chaired one academic session. Invited as Guest of Honor at Veledictory session.
97th Conference of Indian Science Congress (Indian Space Research Organization and University of Kerala, Thiruvananthapuram, Jan. 3-7, 2010) [02 research papers were presented, elected sectional Recorder for chemical Sciences section for the years 2010-11 and 2011-12]