The correct pairs are the Welspun Solar MP project- Madhya Pradesh, Pavagada Solar Park- Karnataka, Bhadla Solar Park- Rajasthan, Kamuthi Solar Power Project- Tamil Nadu.
The useful steps to prevent soil erosion are Afforestation, Contour Ploughing, Prohibition of shifting cultivation, Flood control, Restoration of long fallow, reclamation of alkaline and saline soil.
The main reason of the dispersed settlement are Mountainous or heavy forested area, Poor soil fertility, Adverse climatic region, Less availability of arable land.