Which of the following are examples of combination reaction? (i) CaO+O

1.	Which of the following are examples of combination reaction? (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
Answer» Which of the following are examples of combination reaction? (i) $C a O + O_{2} \to 2 C a C O_{3}$ (ii) $C a C O_{3} \to C a O + C O_{2}$ (iii) $M g O + C O_{2} \to M g C O_{3}$ (iv) $F e + S \to F e S$ (v) $2 A g C l + s u n l i g h t \to 2 A g + C l_{2}$ (vi) $C H_{4} + 2 O_{2} \to C O_{2} + 2 H_{2} O$ (vii) $N a_{2} O + H_{2} O \to 2 N a O H$

Which of the following are examples of combination reaction? (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

Answer»

Which of the following are examples of combination reaction?

(i) $C a O + O_{2} \to 2 C a C O_{3}$

(ii) $C a C O_{3} \to C a O + C O_{2}$

(iii) $M g O + C O_{2} \to M g C O_{3}$

(iv) $F e + S \to F e S$

(v) $2 A g C l + s u n l i g h t \to 2 A g + C l_{2}$

(vi) $C H_{4} + 2 O_{2} \to C O_{2} + 2 H_{2} O$

(vii) $N a_{2} O + H_{2} O \to 2 N a O H$