Civil Service Aspirants Logo

You are browsing the best resource for TNPSC Group 1 Exam.

for the Aspirants who are preparing for Group 2,2A, Group 4,VAO kindly refer your Syllabus and Prepare with our site.
TUTORIALS LIBRARY
  Previous
Next  

Oxidation and Reduction

1. 

In the complex K4 [Fe (CN)6 ] the oxidation number of iron is

A. 0 B. 1 C. 3 D. 2

Answer : C. 2

Justify your answer :  
Name:  
Email ID:  
 

2. 

The oxidation number of C in oxalic acid (H2 C2 O4) is

A. 4 B. 2 C. 3 D. 1

Answer : C. 3

Justify your answer :  
Name:  
Email ID:  
 

3. 

Reduction is addition of

A. Hydrogen B. Water C. oxygen D. Benzene

Answer : A. Hydrogen

Justify your answer :  
Name:  
Email ID:  
 

4. 

Oxidation number of sulphur in sulphuric acid is

A. two B. four C. six D. eight

Answer : C. six

Justify your answer :  
Name:  
Email ID:  
 

5. 

The oxidation number of chromium in K2 Cr2 O7 is

A. 6 B. 3 C. 1 D. 0

Answer : A. 6

Justify your answer :  
Name:  
Email ID:  
 

6. 

Oxidation is the addition of

A. Hydrogen B. Oxygen C. Water D. Phosphorus

Answer : B. Oxygen

Justify your answer :  
Name:  
Email ID:  
 
  Previous
Next  
TOP