Electrochemical Cells (Electrolytic and Galvanic Cells, Different Types of Electrodes,...) NEET Questions

Physical Chemistry - Redox Reactions and Electrochemistry

Electrochemical Cells (Electrolytic and Galvanic Cells, Different Types of Electrodes,...) MCQ Questions


7.
Cu²⁺ + Zn → Cu + Zn²⁺ is an example of
A.
Displacement reaction
B.
Double displacement
C.
Combination
D.
Decomposition
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ANSWER :
A. Displacement reaction
8.
In a standard electrochemical cell, which electrode is the anode?

NEET - 2016

A.
The electrode where reduction occurs
B.
The electrode with higher standard reduction potential
C.
The electrode where oxidation occurs
D.
The negative terminal
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ANSWER :
C. The electrode where oxidation occurs
9.
Electrons in a galvanic cell move through
A.
External circuit
B.
Salt bridge
C.
Internal circuit
D.
Electrolyte
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ANSWER :
A. External circuit
10.
The reduction potential of standard hydrogen electrode is taken as
A.
1.0 V
B.
0.0 V
C.
–1.0 V
D.
+2.0 V
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ANSWER :
B. 0.0 V
11.
The standard electrode potential of Zn²⁺/Zn is –0.76 V and that of Cu²⁺/Cu is +0.34 V. What will be the emf of the cell Zn|Zn²⁺||Cu²⁺|Cu?

NEET - 2017

A.
–1.10 V
B.
0.00 V
C.
+1.10 V
D.
+0.42 V
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ANSWER :
C. +1.10 V
12.
In a galvanic cell, the anode is
A.
Positive
B.
Negative
C.
Neutral
D.
Charged negative
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ANSWER :
B. Negative