1) “Environmental Economics and Carbon Footprinting: The Light at the End of the Tunnel”. Aritra Chakraborty, Sandhya Rai in Fourth National Symposium on Environment: Green Technology for Environmental Sustainability organized at Deshbandhu College, University of Delhi on September 25, 2018. OP 25.
2) “Microorganisms: A promise in Cleaning Environment Arsenic Contamination”. Sandhya Rai and Amod Kumar. Workshop on “Skill Development to Build a Clean India” organized by Deshbandhu College, University of Delhi in collaboration with CSR, Oil and Natural Gas Corporation Ltd. held on June 7-8, 2018. PP 25.
3) Paper presented with students “Lost Wings of Delhi”. Kaushik Sarkar, Sandhya Rai and Nikhil Sharma in Third National Symposium on “Environment: Challenges Generation Next” organized at Deshbandhu College, University of Delhi on March 31, 2017. PP 5.
4) Oral Presentation with students “Man-Animal Conflict: A battle with the elephants”. Kaushik Sarkar, Nikhil Sharma and Sandhya Rai in Third National Symposium on “Environment: Challenges Generation Next” organized at Deshbandhu College, University of Delhi on March 31, 2017. OP 11.
5) “Microwave assisted synthesis of potent metal complexes of Schiff bases derived from carbazole moiety: a green approach”. Gajender Singh, Sanjay Kumar, Sandhya Rai, et al., (2016). National Conference on Emerging Trends and Future Challenges in Chemical Sciences, University of Delhi, 3-4 Feb. 2016. PP 32.