Encyclopedia entry PSLV-2 Stage · India Part of GSLV Original archive entry. The text, images and links below are kept as they were written. N2O4/UDMH propellant rocket stage. . Cost $ : 4.000 million. RelatedCountryIndiaEnginesViking 4Launch VehiclesPSLV, PSLV CPropellantsN2O4/UDMH