Q.
A. Mg3N2 , MgO, NH3, CuSO4.5H2O
B. Mg(NO3)2,MgO, H2, CuSO4.5H2O
C. Mg3N2 , MgO, NH3, [Cu(NH3)4].SO4
D. Mg(NO3)2, MgO2 , H2O2 , CuSO4.5H2O
E. None of the above
Correct choice: C
Explanation: