All Papers GS Paper 1 GS Paper 2 GS Paper 3 GS Paper 4 Essay Full Length Tests Monthly Consolidations Total Questions : 1 Q. What are the main constraints in transport and marketing of agricultural produce in India? (150 words) (UPSC GS-3 Mains 2020). GS Paper 3 Economy Please enable JavaScript to view the comments powered by Disqus.