WBJEE SERIES Chemistry
Electrochemistry
9 previous year questions.
Volume: 9 Ques
Yield: Medium
High-Yield Trend
1
2025 1
2023 2
2018 1
2017 2
2014 1
2011 1
2010 Chapter Questions 9 MCQs
01
PYQ 2010
medium
chemistry ID: wbjee-20
The potential of a hydrogen electrode at is
1
2
3
4
02
PYQ 2011
medium
chemistry ID: wbjee-20
The standard reduction potential for half reations are The EMF of hte cell reaction is
1
2
3
4
03
PYQ 2014
medium
chemistry ID: wbjee-20
The formal potential of in a sulphuric acid and phosphoric acid mixture is much lower than the standard potential This is due to
1
formation of the species
2
lowering of potential upon complexation
3
formation of the species
4
high acidity of the medium
04
PYQ 2014
medium
chemistry ID: wbjee-20
At , the molar conductance of hydrofluoric acid is mho and its mho . The value of the dissociation constant of the acid at the given concentration at is
1
2
3
4
05
PYQ 2017
easy
chemistry ID: wbjee-20
How many faradays are required to reduce of to in acid medium?
1
2
2
3
3
5
4
6
06
PYQ 2018
medium
chemistry ID: wbjee-20
What amount of electricity can deposit mole of metal at cathode when passed through molten
1
0.3 F
2
1 F
3
3 F
4
1/3 F
07
PYQ 2018
medium
chemistry ID: wbjee-20
Given the standard half-cell potentials of the following as Then the standard e.m.f. of the cell with the reaction is
1
-0.35 V
2
+0.35 V
3
+1.17 V
4
-1.17 V
08
PYQ 2023
medium
chemistry ID: wbjee-20
The equivalent conductance of NaCl, HCl, and CH3COONa at infinite dilution are 126.45, 426.16, and 91 ohm-1cm2eq-1 respectively at 25°C. The equivalent conductance of acetic acid(at infinite dilution) would be
1
461.61 ohm-1cm2eq-1
2
390.71 ohm-1cm2eq-1
3
cannot be determined from the given data
4
208.71 ohm-1cm2eq-1
09
PYQ 2025
medium
chemistry ID: wbjee-20
The molar conductances of Ba(OH) , BaCl and NH Cl at infinite dilution are 523.28, 280.0 and 129.8 S cm mol respectively. The molar conductance of NH OH at infinite dilution will be
1
125.72 S cm mol
2
251.44 S cm mol
3
502.88 S cm mol
4
754.32 S cm mol
About Electrochemistry - WBJEE
Electrochemistry is a vital chapter for WBJEE aspirants. Mastering the concepts covered in this chapter is essential for securing a top rank.
By rigorously practicing the previous year questions associated with this chapter, you can identify high-yield topics, understand the examiner's perspective, and boost your confidence during the actual exam.
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How to best use this analysis?
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