Walnut Knowledge Solutions(QShala), a company building out-of-school learning solutions for children, has raised Rs 2.7 crore funding led by Zerodha-backed fund Rainmatter Capital. Mindtree co-founder Kalyan Banerjee and former Director of Lowe Lintas Preeti Sawhney also participated in the funding round. Founded in 2014 by Raghav Chakravarthy and Sachin Ravi, QShala is a curiosity platform…