identify the reaction types

1. 2H₂O₂ -> 2H₂O + O₂
2. 2CO + O₂ -> 2CO₂
3. 2KBr + Cl₂-> 2KCI + Br₂
4. 2H₂O₂ -> 2H₂O + O₂
5. 2HgO -> 2Hg + O₂
6. CaO + H₂O -> Ca(OH)₂
7. Zn + H₂SO4 -> ZnSO4 + H2
8. 2H2 + O2 -> 2H2O
9. Ca(OH)2 + H2SO4 -> CaSO4 + 2H2O
10. AgNO3 + NaCl -> AgCl + NaNO3