ELECTOROCHEMISTRY

1. Which of the following changes reaction is an example of oxidation.

 
 
 
 

2. Which of the following elements in the given reaction is reduced?

ZnO + H2→ Zn+H₂O

 
 
 
 

3. The oxidation state of Cr in K2Cr2O7 is

 
 
 
 

4. Consider the following reaction:    H2S + Cl₂  →2HCI+S

 
 
 
 

5. In which of the following changes, the nitrogen atom is reduced.

 
 
 
 

Question 1 of 5