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Previous year question hub

Electrochemistry - Physical Chemistry - Chemistry Previous Year Questions

Practice Electrochemistry - Physical Chemistry - Chemistry previous year questions organised from real papers, with year-wise coverage and clear topic navigation.

36Papers
28Years
48Questions
1Topics

Electrochemistry question pattern

Every graph below is calculated only from this selection.

Questions by year

Year-wise coverage for Electrochemistry. Each bar uses a separate theme-derived color.

Difficulty distribution

How the classified questions are distributed by difficulty.

Medium 28 58.3%
Not classified 9 18.8%
Hard 6 12.5%
Easy 5 10.4%

Question type distribution

MCQ, numerical, multiple-select and other formats found in these papers.

Multiple Choices 27 56.3%
Numerical Answer Type (NAT) 13 27.1%
Subjective 8 16.7%

Subject weightage

Top subjects by unique question coverage.

Chemistry
48 Qs

Most asked topics

Top topics across the included previous year papers.

Physical Chemistry
48 Qs

Subtopic coverage

Top subtopics inside this exact selection.

Electrochemistry
48 Qs

Paper coverage

Question coverage for the most populated papers. Every active PYP paper remains listed below.

JEE ADVANCED 2025 PAPER 1 ONLINE
1 Qs
JEE ADVANCED 2025 PAPER 2 ONLINE
1 Qs
JEE ADVANCED 2024 PAPER 1 ONLINE
1 Qs
JEE ADVANCED 2024 PAPER 2 ONLINE
1 Qs
JEE ADVANCED 2023 PAPER 1 ONLINE
1 Qs
JEE ADVANCED 2022 PAPER 1 ONLINE
1 Qs
JEE ADVANCED 2022 PAPER 2 ONLINE
1 Qs
JEE ADVANCED 2021 PAPER 2 ONLINE
3 Qs
JEE ADVANCED 2020 PAPER 1 OFFLINE
1 Qs
JEE ADVANCED 2019 PAPER 1 OFFLINE
1 Qs
JEE ADVANCED 2018 PAPER 1 OFFLINE
1 Qs
JEE ADVANCED 2018 PAPER 2 OFFLINE
1 Qs
JEE ADVANCED 2017 PAPER 1 OFFLINE
1 Qs
JEE ADVANCED 2017 PAPER 2 OFFLINE
1 Qs
JEE ADVANCED 2016 PAPER 2 OFFLINE
1 Qs
JEE ADVANCED 2015 PAPER 1 OFFLINE
1 Qs
JEE ADVANCED 2015 PAPER 2 OFFLINE
1 Qs
JEE ADVANCED 2014 PAPER 1 OFFLINE
1 Qs
JEE ADVANCED 2013 PAPER 2 OFFLINE
2 Qs
IIT JEE 2012 PAPER 2 OFFLINE
2 Qs
IIT JEE 2011 PAPER 1 OFFLINE
1 Qs
IIT JEE 2011 PAPER 2 OFFLINE
1 Qs
IIT JEE 2010 PAPER 1 OFFLINE
2 Qs
IIT JEE 2009 PAPER 2 OFFLINE
1 Qs
IIT JEE 2008 PAPER 2 OFFLINE
1 Qs
IIT JEE 2007 PAPER 1 OFFLINE
3 Qs
IIT JEE 2007 PAPER 2 OFFLINE
3 Qs
IIT JEE 2006
4 Qs
IIT JEE 2004
1 Qs
IIT JEE 2003
1 Qs
IIT JEE 1999
1 Qs
IIT JEE 1998
1 Qs
IIT JEE 1996
1 Qs
IIT JEE 1995
1 Qs
IIT JEE 1992
1 Qs
IIT JEE 1991
1 Qs

Included previous year papers

Newest papers appear first. Sort by year, question coverage or name.

PaperYear / sessionQuestions in this viewOpen
JEE ADVANCED 2025 PAPER 1 ONLINE20251View paper
JEE ADVANCED 2025 PAPER 2 ONLINE20251View paper
JEE ADVANCED 2024 PAPER 1 ONLINE20241View paper
JEE ADVANCED 2024 PAPER 2 ONLINE20241View paper
JEE ADVANCED 2023 PAPER 1 ONLINE20231View paper
JEE ADVANCED 2022 PAPER 1 ONLINE20221View paper
JEE ADVANCED 2022 PAPER 2 ONLINE20221View paper
JEE ADVANCED 2021 PAPER 2 ONLINE20213View paper
JEE ADVANCED 2020 PAPER 1 OFFLINE20201View paper
JEE ADVANCED 2019 PAPER 1 OFFLINE20191View paper
JEE ADVANCED 2018 PAPER 1 OFFLINE20181View paper
JEE ADVANCED 2018 PAPER 2 OFFLINE20181View paper
JEE ADVANCED 2017 PAPER 1 OFFLINE20171View paper
JEE ADVANCED 2017 PAPER 2 OFFLINE20171View paper
JEE ADVANCED 2016 PAPER 2 OFFLINE20161View paper
JEE ADVANCED 2015 PAPER 1 OFFLINE20151View paper
JEE ADVANCED 2015 PAPER 2 OFFLINE20151View paper
JEE ADVANCED 2014 PAPER 1 OFFLINE20141View paper
JEE ADVANCED 2013 PAPER 2 OFFLINE20132View paper
IIT JEE 2012 PAPER 2 OFFLINE20122View paper
IIT JEE 2011 PAPER 1 OFFLINE20111View paper
IIT JEE 2011 PAPER 2 OFFLINE20111View paper
IIT JEE 2010 PAPER 1 OFFLINE20102View paper
IIT JEE 2009 PAPER 2 OFFLINE20091View paper
IIT JEE 2008 PAPER 2 OFFLINE20081View paper
IIT JEE 2007 PAPER 1 OFFLINE20073View paper
IIT JEE 2007 PAPER 2 OFFLINE20073View paper
IIT JEE 200620064View paper
IIT JEE 200420041View paper
IIT JEE 200320031View paper
IIT JEE 199919991View paper
IIT JEE 199819981View paper
IIT JEE 199619961View paper
IIT JEE 199519951View paper
IIT JEE 199219921View paper
IIT JEE 199119911View paper

All Electrochemistry previous year questions

Practice every matching question in batches of 20, with every available option.

1
1991 · Chemistry · Physical Chemistry · Electrochemistry
IIT JEE 1991
The current of 1.70 A is passed through 300.0 ml of 0.160 M solution of a ZnSO4 for 230 sec. with a current efficiency of 90%. Find out the molarity of Zn2+ after the deposition of Zn. Assume the volume of the solution to remain constant during electrolysis.
Write your response
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2
1992 · Chemistry · Physical Chemistry · Electrochemistry
IIT JEE 1992
For the galvanic cell
Ag | AgCl(s), KCl (0.2M) || KBr (0.001M), AgBr(s) | Ag
Calculate the EMF generated and assign correct polarity to each electrode for a spontaneous process after taking into account the cell reaction at 25oC.
[Ksp(AgCl) = 2.8 \(times\) 10-10; Ksp(AgBr) = 3.3 \(times\) 10-13]
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3
1995 · Chemistry · Physical Chemistry · Electrochemistry
IIT JEE 1995
An excess of liquid mercury is added to an acidified solution of 1.0 \(\times\) 10-3 M Fe3+. It is found that 5% of Fe3+ remains at equilibrium at 25oC. Calculate \(E_{Hg_2^{2 + }|\,Hg}^o\), assuming that only reaction that occurs is
2Hg + 2Fe3+ \(\to\) \(Hg_2^{2+}\) + 2Fe2+
(Given \(E_{F{e^{3 + }}|\,F{e^{2 + }}}^o\) = 0.77 V)
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4
1996 · Chemistry · Physical Chemistry · Electrochemistry
IIT JEE 1996
The standard reduction potential for Cu2+|Cu is +0.34 V. Calculate the reduction potential at pH = 14 for the above couple. Ksp of Cu(OH)2 is 1.0 \(\times\) 10-19
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5
1998 · Chemistry · Physical Chemistry · Electrochemistry
IIT JEE 1998
Calculate the equilibrium constant for the reaction:
2Fe3+ + 3I- \(\leftrightharpoons\) 2Fe2+ + \(I_3^-\). The standard reduction potentials in acidic conditions are 0.78 V and 0.54 V respectively for Fe3+ | Fe2+ and \(I_3^-\) | I- couples.
Write your response
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6
1999 · Chemistry · Physical Chemistry · Electrochemistry
IIT JEE 1999
A cell, Ag | Ag+ || Cu2+ | Cu, initially contains 1 M Ag+ and 1 M Cu2+ ions. Calculate the change in the cell potential after the passage of 9.65 A current for 1 h.
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7
2003 · Chemistry · Physical Chemistry · Electrochemistry
IIT JEE 2003
Two students use the same stock solution of ZnSO4 and solution of CuSO4. The emf of one cell is 0.03 V higher than other. The conc. of CuSO4 in the cell with higher emf value is 0.5 M. Find out the conc. of CuSO4 in the other cell (2.203 RT/F = 0.06)
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8
2004 · Chemistry · Physical Chemistry · Electrochemistry
IIT JEE 2004
Find the equilibrium constant for the reaction,
In2+ + Cu2+ \(\to\) In3+ + Cu+ at 298 K
given
\(E_{C{u^{2 + }}/C{u^ + }}^o\) = 0.15 V; \(E_{l{n^{2 + }}/l{n^ + }}^o\) = -0.40 V; \(E_{l{n^{3 + }}/l{n^ + }}^o\) = -0.42 V;
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9
2006 · Chemistry · Physical Chemistry · Electrochemistry
IIT JEE 2006
We have taken a saturated solution of AgBr. Ksp of AgBr is 12 \(\times\) 10-14. If 10-7 mole of AgNO3 are added to 1 litre of this solution find conductivity (specific conductance) of this solution in terms of 10-7 S m-1 units. Given, molar conductance of Ag+, Br- and \(NO_3^-\) are 6 \(\times\) 10-3 Sm2 mol-1, 8 \(\times\) 10-3 Sm2 mol-1 and 7 \(\times\) 10-3 Sm2 mol-1
Enter a numerical response
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10
2006 · Chemistry · Physical Chemistry · Electrochemistry
IIT JEE 2006

When ammonia is added to the solution, pH is raised to 11 . Which half-cell reaction is affected by pH and by how much?

A

$\mathrm{E}_{\text {oxd }}$ will increase by a factor of 0.65 from $\mathrm{E}_{\text {oxd }}^{\mathrm{o}}$

B

$\mathrm{E}_{\text {oxd }}$ will decrease by a factor of 0.65 from $\mathrm{E}_{\text {oxd }}^{\mathrm{o}}$

C

$\mathrm{E}_{\text {red }}$ will increase by a factor of 0.65 from $\mathrm{E}_{\text {red }}^{\mathrm{o}}$

D

$\mathrm{E}_{\text {red }}$ will decrease by a factor of 0.65 from $\mathrm{E}_{\text {red }}^{\mathrm{o}}$

Open complete paper
11
2006 · Chemistry · Physical Chemistry · Electrochemistry
IIT JEE 2006

$$\begin{array}{r} 2 \mathrm{Ag}^{+}+\mathrm{C}_6 \mathrm{H}_{12} \mathrm{O}_6+\mathrm{H}_2 \mathrm{O} \rightarrow 2 \mathrm{Ag}(\mathrm{~s})+\mathrm{C}_6 \mathrm{H}_{12} \mathrm{O}_7 +2 \mathrm{H}^{+} \end{array}$$

Find $\ln \mathrm{K}$ of this reaction.

A

66.13

B

58.38

C

28.30

D

46.29

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12
2006 · Chemistry · Physical Chemistry · Electrochemistry
IIT JEE 2006

Ammonia is always added in this reaction. Which of the following must be incorrect?

A

$\mathrm{NH}_3$ combines with $\mathrm{Ag}^{+}$to form a complex.

B

$\mathrm{Ag}\left(\mathrm{NH}_3\right)_2$ is a stronger oxidising reagent than $\mathrm{Ag}^{+}$.

C

In absence of $\mathrm{NH}_3$, silver salt of gluconic acid is formed.

D

$\mathrm{NH}_3$ has affected the standard reduction potential of glucose/gluconic acid electrode.

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13
2007 · Chemistry · Physical Chemistry · Electrochemistry
IIT JEE 2007 PAPER 1 OFFLINE

The total number of moles of chlorine gas evolved is :

A
0.5
B
1.0
C
2.0
D
3.0
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14
2007 · Chemistry · Physical Chemistry · Electrochemistry
IIT JEE 2007 PAPER 1 OFFLINE

If the cathode is a Hg electrode, the maximum weight (g) of amalgam formed from this solution is:

A
200
B
225
C
400
D
446
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15
2007 · Chemistry · Physical Chemistry · Electrochemistry
IIT JEE 2007 PAPER 1 OFFLINE

The total charge (coulombs) required for complete electrolysis is:

A
24125
B
48250
C
96500
D
193000
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16
2007 · Chemistry · Physical Chemistry · Electrochemistry
IIT JEE 2007 PAPER 2 OFFLINE

Among the following, identify the correct statement.

A
Chloride ion is oxidised by \(\mathrm{O}_{2}\)
B
\(\mathrm{Fe}^{2+}\) is oxidised by iodine
C
Iodide ion is oxidised by chlorine
D
\(\mathrm{Mn}^{2+}\) is oxidised by chlorine
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17
2007 · Chemistry · Physical Chemistry · Electrochemistry
IIT JEE 2007 PAPER 2 OFFLINE

While \(\mathrm{Fe}^{3+}\) is stable, \(\mathrm{Mn}^{3+}\) is not stable in acid solution because

A
\(\mathrm{O}_{2}\) oxidises \(\mathrm{Mn}^{2+}\) to \(\mathrm{Mn}^{3+}\)
B
\(\mathrm{O}_{2}\) oxidises both \(\mathrm{Mn}^{2+}\) and \(\mathrm{Fe}^{2+}\) to \(\mathrm{Fe}^{3+}\)
C
\(\mathrm{Fe}^{3+}\) oxidises \(\mathrm{H}_{2} \mathrm{O}\) to \(\mathrm{O}_{2}\)
D
\(\mathrm{Mn}^{3+}\) oxidises \(\mathrm{H}_{2} \mathrm{O}\) to \(\mathrm{O}_{2}\)
Open complete paper
18
2007 · Chemistry · Physical Chemistry · Electrochemistry
IIT JEE 2007 PAPER 2 OFFLINE

Sodium fusion extract, obtained from aniline, on treatment with iron (II) sulphate and \(\mathrm{H}_{2} \mathrm{SO}_{4}\) in presence of air gives a Prussian blue precipitate. The blue colour is due to the formation of

A
\(\mathrm{Fe}_{4}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]_{3}\)
B
\(\mathrm{Fe}_{3}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]_{2}\)
C
\(\mathrm{Fe}_{4}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]_{2}\)
D
\(\mathrm{Fe}_{3}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]_{3}\)
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19
2008 · Chemistry · Physical Chemistry · Electrochemistry
IIT JEE 2008 PAPER 2 OFFLINE

Electrolysis of dilute aqueous NaCl solution was carried out by passing 10 milli ampere current. The time required to liberate 0.01 mol of H\(_2\) gas at the cathode is (1 Faraday = 96500 C mol\(^{-1}\)].

A
9.65 \(\times\) 10\(^4\) sec
B
19.3 \(\times\) 10\(^4\) sec
C
28.95 \(\times\) 10\(^4\) sec
D
38.6 \(\times\) 10\(^4\) sec
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20
2009 · Chemistry · Physical Chemistry · Electrochemistry
IIT JEE 2009 PAPER 2 OFFLINE

For the reduction of NO\(_3^ -\) ion in an aqueous solution, E\(^0\) is + 0.96 V. Values of E\(^0\) for some metal ions are given below:

$$\matrix{ {{V^{2 + }}(aq.) + 2{e^ - } \to V} & {{E^0} = - 1.19\,V} \cr {F{e^{3 + }}(aq.) + 3{e^ - } \to Fe} & {{E^0} = - 0.04\,V} \cr {A{u^{3 + }}(aq) + 3{e^ - } \to Au} & {{E^0} = + 1.40\,V} \cr {H{g^{2 + }}(aq) + 2{e^ - } \to Hg} & {{E^0} = + 0.86\,V} \cr }$$

The pair(s) of metals that is (are) oxidized by NO\(_3^ -\) in aqueous solution is(are)

A
V and Hg
B
Hg and Fe
C
Fe and Au
D
Fe and V
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Showing 20 of 48 questions