Electronic Concepts of Oxidation and Reduction NEET Questions

Physical Chemistry - Redox Reactions and Electrochemistry

Electronic Concepts of Oxidation and Reduction MCQ Questions


1.
Oxidation is defined as:
A.
Gain of electrons
B.
Gain of protons
C.
Loss of neutrons
D.
Loss of electrons
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ANSWER :
D. Loss of electrons
2.
Reduction is defined as:
A.
Gain of oxygen
B.
Gain of electrons
C.
Loss of electrons
D.
Loss of hydrogen
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ANSWER :
B. Gain of electrons
3.
Which of the following changes represents oxidation?

NEET - 2019

A.
Mg → Mg²⁺ + 2e⁻
B.
HCl → H⁺ + Cl⁻
C.
O₂ → O²⁻
D.
Cl⁻ → Cl₂
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ANSWER :
A. Mg → Mg²⁺ + 2e⁻
4.
In a redox reaction, the substance that gets oxidised is the:
A.
Reducing agent
B.
Oxidising agent
C.
Product
D.
Neutral species
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ANSWER :
A. Reducing agent
5.
What is the oxidation state of Mn in KMnO₄?

NEET - 2024

A.
2
B.
4
C.
7
D.
5
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ANSWER :
C. 7
6.
The oxidation number of oxygen in peroxides is:
A.
-2
B.
-1
C.
0
D.
1
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ANSWER :
B. -1