Oxidation States and Chemical Reactivity NEET Questions

Inorganic Chemistry - Classification of Elements and Periodicity in Properties

Oxidation States and Chemical Reactivity MCQ Questions


1.
Oxidation state of an element is defined as:
A.
The total number of electrons in the atom
B.
The atomic number of the element
C.
The number of valence electrons
D.
The charge that an atom in a compound would have if all its bonds were treated as ionic
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ANSWER :
D. The charge that an atom in a compound would have if all its bonds were treated as ionic
2.
Oxidation can be defined as:
A.
Loss of electrons or increase in oxidation state
B.
Gain of electrons or decrease in oxidation state
C.
Addition of hydrogen to a compound
D.
Removal of oxygen from a compound
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ANSWER :
A. Loss of electrons or increase in oxidation state
3.
Reduction can be defined as:
A.
Gain of electrons or decrease in oxidation state
B.
Loss of electrons or increase in oxidation state
C.
Removal of hydrogen from a compound
D.
Addition of oxygen to a compound
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ANSWER :
A. Gain of electrons or decrease in oxidation state
4.
An oxidizing agent is a substance that:
A.
Increases the rate of reaction
B.
Oxidizes another substance and is itself reduced
C.
Reduces another substance and is itself oxidized
D.
Always contains oxygen
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ANSWER :
B. Oxidizes another substance and is itself reduced
5.
A reducing agent is a substance that:
A.
Oxidizes another substance and is itself reduced
B.
Reduces another substance and is itself oxidized
C.
Always contains hydrogen
D.
Decreases the rate of reaction
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ANSWER :
B. Reduces another substance and is itself oxidized
6.
Redox reactions are reactions involving:
A.
Only oxidation
B.
Neither oxidation nor reduction
C.
Only reduction
D.
Simultaneous oxidation and reduction
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ANSWER :
D. Simultaneous oxidation and reduction