The correct matches are Vajrai Waterfall- Urmodi river (Maharashtra), Barehipani Falls- Budhabalanga River (Odisha), Dhuandhar Falls- Narmada (Madhya Pradesh), Kunchikal Falls- Varahi river (Karnataka).
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.