1. Department of Chemistry, Pandu College, Guwahati, Assam PIN- 781012, India
2. Department of Chemistry, Jagiroad
College, Jagiroad, Assam PIN- 782410, India
3. Department of Chemistry, ADP College, Nagaon, Assam PIN- 782002,
India
4. Department of Chemistry, Gauhati University, Guwahati, Assam PIN- 781014, India