Electronic Concepts of Oxidation and Reduction NEET Questions

Physical Chemistry - Redox Reactions and Electrochemistry

Electronic Concepts of Oxidation and Reduction MCQ Questions


7.
Which element acts as both oxidising and reducing agent?
A.
H₂O₂
B.
HCl
C.
MgO
D.
H₂SO₄
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ANSWER :
A. H₂O₂
8.
In the reaction Zn + CuSO₄ → ZnSO₄ + Cu, which species is oxidised?
A.
Zn
B.
Cu²⁺
C.
Cu
D.
SO₄²⁻
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ANSWER :
A. Zn
9.
In the same reaction, which species is reduced?
A.
Zn
B.
Cu²⁺
C.
SO₄²⁻
D.
Zn²⁺
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ANSWER :
B. Cu²⁺
10.
In electronic concept, oxidation is defined as

NEET - 2015

A.
Gain of electrons
B.
Loss of protons
C.
Loss of electrons
D.
Gain of neutrons
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ANSWER :
C. Loss of electrons
11.
Which of the following is not a redox reaction?
A.
Zn + H₂SO₄ → ZnSO₄ + H₂
B.
NaOH + HCl → NaCl + H₂O
C.
C + O₂ → CO₂
D.
Fe + CuSO₄ → FeSO₄ + Cu
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ANSWER :
B. NaOH + HCl → NaCl + H₂O
12.
A substance that loses electrons in a redox reaction is:
A.
Reduced
B.
Oxidised
C.
Neutral
D.
Inert
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ANSWER :
B. Oxidised