Extra pure N2 can be obtained by heating (a) NH3 with CuO (b) NH4NO3 (c) (NH4)2Cr2O7 Extra pure N2 can be obtained by heating (a) NH3 with CuO (b) NH4NO3 (c) (NH4)2Cr2O7 November 28, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,