NEET Chemistry Redox Reactions Oxidation Number MCQs

Prepare for NEET Chemistry Redox Reactions (Oxidation Number) with MCQs & PYQs on NEET.GUIDE. Access free practice, previous year questions, and expert solutions to assign oxidation states and track electron transfer.

NEET Questions / Chemistry / Redox Reactions / Oxidation Number

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Oxidation Number

Oxidation & Reduction

Balancing Of Redox Reactions

Electrochemical Cells

Electrode Potential

Nernst Equation

Batteries,Corrosion

In the complex ion $[Co(NH_3)_4Cl_2]^+$ , the oxidation number of cobalt and the coordination number of the complex are respectively:

A

+2, 4

B

+3, 6

C

+4, 6

D

+2, 6

Question Tags

📚 Subject:Chemistry

📑 Chapter:Redox Reactions

🎯Topic:Oxidation Number

🎓 Ncert Level:Application

🎯Difficulty :Hard

⚡ Time Required :1.5 mins

🔄Ncert Concepts :Oxidation Number, Coordination Compounds

What is the oxidation state of sulfur in $Na_2S_4O_6$ ?

A

+2

B

+2.5

C

+4

D

+6

Question Tags

📚 Subject:Chemistry

📑 Chapter:Redox Reactions

🎯Topic:Oxidation Number

🎓 Ncert Level:Application

🎯Difficulty :Hard

⚡ Time Required :2 mins

🔄Ncert Concepts :Oxidation Number, Polythionic acids

The oxidation number of Cr in $[Cr(NH_3)_4Cl_2]Cl$ is:

A

+1

B

+2

C

+3

D

+4

Question Tags

📚 Subject:Chemistry

📑 Chapter:Redox Reactions

🎯Topic:Oxidation Number

🎓 Ncert Level:Application

🎯Difficulty :Hard

⚡ Time Required :1.5 mins

🔄Ncert Concepts :Oxidation Number, Coordination Compounds

What is the average oxidation state of Fe in $Fe_3O_4$ ?

A

+2

B

+3

C

+8/3

D

+4

Question Tags

📚 Subject:Chemistry

📑 Chapter:Redox Reactions

🎯Topic:Oxidation Number

🎓 Ncert Level:Application

🎯Difficulty :Hard

⚡ Time Required :2 mins

🔄Ncert Concepts :Oxidation Number, Mixed Oxides

Find the oxidation state of Fe in brown ring complex $[Fe(H_2O)_5(NO)]SO_4$ :

A

+1

B

+2

C

+3

D

+4

Question Tags

📚 Subject:Chemistry

📑 Chapter:Redox Reactions

🎯Topic:Oxidation Number

🎓 Ncert Level:Application

🎯Difficulty :Hard

⚡ Time Required :2 mins

🔄Ncert Concepts :Oxidation Number, Coordination Compounds, Nitrosyl Complexes

In which of the following compounds does oxygen exhibit an oxidation state other than -2?

A

$H_2O_2$

B

$Na_2O$

C

$OF_2$

D

$Na_2O_2$

Question Tags

📚 Subject:Chemistry

📑 Chapter:Redox Reactions

🎯Topic:Oxidation Number

🎓 Ncert Level:Application

🎯Difficulty :Hard

⚡ Time Required :1.5 mins

🔄Ncert Concepts :Oxidation Number, Exceptions to Oxidation State Rules

What is the oxidation number of sulfur in $H_2SO_4$ ?

A

+2

B

+4

C

+6

D

+8

Question Tags

📚 Subject:Chemistry

📑 Chapter:Redox Reactions

🎯Topic:Oxidation Number

🎓 Ncert Level:Application

🎯Difficulty :Easy

⚡ Time Required :1 mins

🔄Ncert Concepts :Oxidation Number, Oxidation State

What is the oxidation number of oxygen in $H_2O_2$ (hydrogen peroxide)?

A

-2

B

-1

C

0

D

+1

Question Tags

📚 Subject:Chemistry

📑 Chapter:Redox Reactions

🎯Topic:Oxidation Number

🎓 Ncert Level:Remembering

🎯Difficulty :Easy

⚡ Time Required :1 mins

🔄Ncert Concepts :Oxidation Number, Peroxides

The oxidation number of any element in its free state is:

A

+1

B

-1

C

0

D

Variable

Question Tags

📚 Subject:Chemistry

📑 Chapter:Redox Reactions

🎯Topic:Oxidation Number

🎓 Ncert Level:Remembering

🎯Difficulty :Easy

⚡ Time Required :1 mins

🔄Ncert Concepts :Oxidation Number, Free Element

What is the oxidation number of nitrogen in $NH_3$ ?

A

+3

B

+1

C

-1

D

-3

Question Tags

📚 Subject:Chemistry

📑 Chapter:Redox Reactions

🎯Topic:Oxidation Number

🎓 Ncert Level:Application

🎯Difficulty :Easy

⚡ Time Required :1 mins

🔄Ncert Concepts :Oxidation Number

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