Redox Reactions NDA Questions

NDA Chemistry

Redox Reactions MCQ Questions


7.

Which of the following is an oxidizing agent?

A.

Zn

B.

O2

C.

Cl-

D.

HNO

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ANSWER :

B. O2

8.

The oxidation number of Cl in Cl2O7 is

A.

5

B.

-5

C.

7

D.

-7

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ANSWER :

C. 7

9.

The oxidation number of Mn is maximum in

A.

HCl

B.

KMnO4

C.

KMnO3

D.

K2MnO3

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ANSWER :

B. KMnO4

10.

In the reaction Zn + CuSO4 → Cu + ZnSO4, which species is reduced?

A.

Zn

B.

CusO4

C.

Cu

D.

None of the above

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ANSWER :

C. Cu

11.
The tendency of an electrode to lose electrons is known as __________
A.
Initial Potential
B.
Oxidation Potential
C.
Electrode Potential
D.
Reduced Potential
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ANSWER :
B. Oxidation Potential
12.

Which of the following is an example of a redox reaction?

A.

H2O2 → H2O + O2

B.

CaCO3 → CaO + CO3

C.

2NaCl + H2SO4 → Na2SO4 + 2H2O

D.

None of the above

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ANSWER :

A. H2O2 → H2O + O2