ELECTOROCHEMISTRY

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

4. The oxidation state of Cr in K2Cr2O7 is

 
 
 
 

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

ZnO + H2→ Zn+H₂O

 
 
 
 

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