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B
heating NH3CI or (NH4)2CO3
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C
heating of NH4NO3 with NaOH
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D
reaction of AIN or Mg3N2 or CaCN2 with H2O
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Solution
The correct option is B heating of NH4NO3 or NH4NO2 Reactions are: NH4NO3→N2O+H2O NH4NO2→N2+H2O NH4Cl→NH3+HCl NH4NO3(aq)+NaOH(s)→NH3(g)+H2O(l)+NaNO3(aq) CaCN2+3H2O→CaCO3+NH3