RRB NTPC Prelims Model Paper 1 with solutions

(4) Koyali (near Vadodara) in Gujarat is known for the Gujarat Refinery, the second largest refinery owned by Indian Oil Corporation after Panipat Refinery. Bombay High is an offshore oilfield off the coast of Mumbai; Barauni is famous for Barauni Refinery. Koderma in Jharkhand holds the world record of the largest deposits of mica in the world.