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 main reason for the earthquakes in India is the tectonic movement. The Indian plate is continuously hitting at Asia plate at a rate of approximately 47 mm/year (anticlockwise).