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Question:

When copper is heated with conc. HNO3, it produces:

Cu(NO3)2andN2O

Cu(NO3)2andNO

Cu(NO3)2,NOandNO2

Cu(NO3)2andNO2

Solution:

When copper is heated with conc.HNO3 it produces cupric nitrate Cu(NO3)2 and nitrogen dioxide NO2. Cu + 4HNO3 → Cu(NO3)2 + 2NO2 + 2H2O Hence, option D is correct.