List of top Services and Infrastructure Questions on Waste Management asked in GATE AR

For composting, the optimum Carbon to Nitrogen (C:N) ratio is closest to _________.
As per the Solid Waste Management Rules, 2016, co-processing is the use of _________ and _______ solid waste having calorific value exceeding 1500 kcal/kg as raw material or as a source of energy, or both.