1. Department of Education Science and Mathematics, Regional Institute of Education, Shyamla-Hills, Bhopal - 462013, India.
2. Department of Chemistry, S.S.L. Jain College, VIDISHA-464001 (M.P.) India.
3. Department of Chemistry, Akal college of Basic Sciences, Eternal University, Baru Sahib, Sirmaur, Himachal Pradesh-173101 India.