Bengaluru-based deeptech startup altM has raised $10.3 million (about Rs 100 crore) in a round led by Rainmatter by Zerodha and Mela Ventures, as it looks to scale the production of specialty chemicals made from agricultural waste and reduce India’s dependence on imported petrochemical-based materials.Existing investors Omnivore, Theia Ventures, Aureolis Ventures, and Spectrum Impact, along with angel investors also participated in the