Important Chemical Reactions and Processes CDS Questions

CDS Chemistry

Important Chemical Reactions and Processes 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.

KMnO2

C.

KMnO3

D.

K2MnO3

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ANSWER :

B. KMnO2

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

😑 View Answer Rough Work Error
ANSWER :

A. H2O2 → H2O + O2