Which of the following are redox reactions?I. PCl3+Cl2→PCl5II. Cu+2AgNO3→Cu(NO3)2+2AgIII. CO2+2LiOH→Li2CO3+H2OIV. FeCl2+2NaOH→Fe(OH)2+2NaCl
Which of the following are examples of combination reactions?
(i) CaO+O2→2CaCO3
(ii) CaCO3→CaO+CO2
(iii) MgO+CO2→MgCO3
(iv) Fe+S→FeS
(v) 2AgCl+sunlight→2Ag+Cl2
(vi) CH4+2O2→CO2+2H2O
(vii) Na2O+H2O→2NaOH
Which of the following are examples of combination reaction?