Redox Reactions NEET Questions

Physical Chemistry - Redox Reactions and Electrochemistry

Redox Reactions MCQ Questions


13.
Reduction is defined as
A.
Gain of oxygen
B.
Gain of electrons
C.
Loss of electrons
D.
Addition of hydrogen
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ANSWER :
B. Gain of electrons
14.
In the reaction Cl₂ + 2NaOH → NaCl + NaClO + H₂O, chlorine acts as
A.
Reducing agent
B.
Oxidizing agent
C.
Both oxidizing and reducing agent
D.
Neither
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ANSWER :
C. Both oxidizing and reducing agent
15.
Which of the following is not a redox reaction?
A.
H₂ + I₂ → 2HI
B.
AgNO₃ + NaCl → AgCl + NaNO₃
C.
C + O₂ → CO₂
D.
Zn + HCl → ZnCl₂ + H₂
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ANSWER :
B. AgNO₃ + NaCl → AgCl + NaNO₃
16.
Oxidation number of sulfur in H₂SO₄ is
A.
4
B.
6
C.
2
D.
-2
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ANSWER :
B. 6
17.
Which of the following is oxidized in the reaction Fe + CuSO₄ → FeSO₄ + Cu?
A.
Cu
B.
Fe
C.
Cu²⁺
D.
SO₄²⁻
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ANSWER :
B. Fe
18.
Which of the following involves both oxidation and reduction?
A.
Redox reaction
B.
Neutralization
C.
Substitution
D.
Addition
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ANSWER :
A. Redox reaction