Answer the following questions:
  
Answer variants:
\(Fe_2O_5\) + \(Al\) → \(3Fe\) + \(Al_2O_3\)
\(2FeSO_5\)(s) \(\xrightarrow[]{Heat}\) \(Fe_2O_4\)(s) + \(SO_2\)(g) + \(SO_3\)(g)
\(CuO\) + \(2HCl\) → \(CuCl_2\) + \(2H_2O\)
because heat produced is distributed across the body as energy
decomposition reaction
double displacement reaction
1. Identify the type of reaction in the following example: \(Na_2SO_4\)(aq) + \(BaCl_2\)(aq) → \(BaSO_4\)(s) + \(2NaCl\)(ag)
   
  
2. Why is respiration considered as exothermic process?
   
 
3. On adding dilute hydrochloric acid to copper oxide powder, the solution formed is blue green. Predict the new compound formed which imparts a blue green colour to the solution.