KEAM SERIES Chemistry
Electrochemistry
12 previous year questions.
Volume: 12 Ques
Yield: Medium
High-Yield Trend
1
2026 5
2025 2
2024 1
2023 1
2022 1
2012 1
2010 Chapter Questions 12 MCQs
01
PYQ 2010
medium
chemistry ID: keam-201
One Faraday of electricity is passed through molten aqueous solution of and molten taken in three different electrolytic cells connected in series. The mole ratio of and deposited at the respective cathode is
1
2
3
4
02
PYQ 2012
medium
chemistry ID: keam-201
The electrolyte used in Leclanche cell is
1
paste of and
2
38 % solution of
3
Moist paste of and
4
Moist sodium hydroxide
03
PYQ 2022
medium
chemistry ID: keam-202
The standard electrode potentials of some electrodes are given below:
Fe3+/Fe2+ 0.77V; Br2/Br- 1.09V; I2/I- 0.54V; Zn2+/Zn(s) -0.76V;
Ag+/Ag(s) 0.80V; Fe2+/Fe(s) -0.44V; Cu2+/Cu(s) 0.34V
Predict the reaction that is not feasible:
Fe3+/Fe2+ 0.77V; Br2/Br- 1.09V; I2/I- 0.54V; Zn2+/Zn(s) -0.76V;
Ag+/Ag(s) 0.80V; Fe2+/Fe(s) -0.44V; Cu2+/Cu(s) 0.34V
Predict the reaction that is not feasible:
1
Fe3(aq) oxidises I-(aq)
2
Ag+(aq) oxidises Cu(s)
3
Ag(s) reduces Fe3-(aq)
4
Br2(aq) oxidises Fe2+(aq)
5
Zn(s) reduces Cu2+(aq)
04
PYQ 2023
hard
chemistry ID: keam-202
The resistance of the cell containing the aqueous solution of NaCl at 20°C is 60 ohm. If the specific conductivity of this solution at 20°C is 0.04 ohm-1.cm-1,what is the cell constant in cm-1?
1
2.5
2
1.5
3
0.5
4
0.15
5
2.4
05
PYQ 2024
medium
chemistry ID: keam-202
The limiting molar conductances of NaCl, HCl and CH COONa at 300 K are 126.4, 425.9 and 91.0 S cm mol respectively. The limiting molar conductance of acetic acid at 300 K is:
1
2
3
4
5
06
PYQ 2024
medium
chemistry ID: keam-202
The resistance of a conductivity cell filled with 0.02 M KCl solution is 520 ohm at 298 K. The conductivity of the solution at 298 K is (Cell constant = 130 cm ):
1
2
3
4
5
07
PYQ 2025
medium
chemistry ID: keam-202
Aryl halides react with Na in dry ether gives diphenyls. Name of the reaction is:
1
Wurtz reaction
2
Sandmeyer reaction
3
Finkelstein reaction
4
Reimer-Tiemann reaction
08
PYQ 2025
medium
chemistry ID: keam-202
The ion with the highest limiting molar conductance at 298 K is
1
2
3
4
5
09
PYQ 2025
medium
chemistry ID: keam-202
Which of the following is the correct order of conductivity (in )?
1
2
3
4
5
10
PYQ 2025
medium
chemistry ID: keam-202
The molar conductivity acetic acid is . Its degree of dissociation is for acetic acid= 390.5 S
1
0.12
2
0.40
3
0.02
4
0.20
5
0.04
11
PYQ 2025
medium
chemistry ID: keam-202
The resistance of 0.10 M KCl solution when measured with a conductivity cell at 298 K is 100 . If the conductivity of 0.10 M KCl solution is 1.29 S m , what is the value of cell constant of the same solution at 298 K
1
2
3
4
5
12
PYQ 2026
medium
chemistry ID: keam-202
Find the emf of the reaction at 298K
About Electrochemistry - KEAM
Electrochemistry is a vital chapter for KEAM 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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