Question

Among the following, a chemical combination is
A. 2H2 (g) + O2(g) → 2H2O (1)
B. 2HgO (s) + 2Hg (1) + O2 (g)
c. Zn(s) + CuSO4 (aq) + ZnSO4 (aq) + Cu(s)
D. AgNO, (aq) + NaCl(aq) → AgCl + NaNO3 (aq)​

Answer 1

C or D ........!!!!!!!!!!!!