My Cart
Your Cart 0

    Your cart is empty.

  • Total (Amount) ₹0.00
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.

45Papers
36Years
64Questions
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 38 59.4%
Hard 10 15.6%
Not classified 10 15.6%
Easy 6 9.4%

Question type distribution

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

MCQ 24 37.5%
Subjective 23 35.9%
Numerical Answer Type (NAT) 13 20.3%
MSQ 4 6.3%

Subject weightage

Top subjects by unique question coverage.

Chemistry
64 Qs

Most asked topics

Top topics across the included previous year papers.

Physical Chemistry
64 Qs

Subtopic coverage

Top subtopics inside this exact selection.

Electrochemistry
64 Qs

Paper coverage

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

JEE Advanced 2026 Paper 2 Online
1 Qs
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 2005
1 Qs
IIT JEE 2005 MAINS
1 Qs
IIT JEE 2004
1 Qs
IIT JEE 2003
1 Qs
IIT JEE 2001
1 Qs
IIT JEE 2000
2 Qs
IIT JEE 1999
1 Qs
IIT JEE 1998
2 Qs
IIT JEE 1997
2 Qs
IIT JEE 1996
1 Qs
IIT JEE 1995
1 Qs
IIT JEE 1994
2 Qs
IIT JEE 1993
2 Qs
IIT JEE 1992
2 Qs
IIT JEE 1991
2 Qs
IIT JEE 1987
1 Qs

Included previous year papers

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

PaperYear / sessionQuestions in this viewOpen
JEE Advanced 2026 Paper 2 Online20261View paper
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 200520051View paper
IIT JEE 2005 MAINS20051View paper
IIT JEE 200420041View paper
IIT JEE 200320031View paper
IIT JEE 200120011View paper
IIT JEE 200020002View paper
IIT JEE 199919991View paper
IIT JEE 199819982View paper
IIT JEE 199719972View paper
IIT JEE 199619961View paper
IIT JEE 199519951View paper
IIT JEE 199419942View paper
IIT JEE 199319932View paper
IIT JEE 199219922View paper
IIT JEE 199119912View paper
IIT JEE 198719871View paper

All Electrochemistry previous year questions

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

1
1987 · Chemistry · Physical Chemistry · Electrochemistry
IIT JEE 1987
(i) What is the weight of sodium bromate and molarity pf solution necessary to prepare 85.5 ml of 0.672 B solution when the half-cell reaction is

\(BrO_3^- + 6H^+ + 6e^- \to\) \(Br^- + 3H_2O\)

(ii) What would be the weight as well as molarity if the half-cell reaction is:

\(2BrO_3^- + 12H^+ + 10e^- \to\) \(Br_2 \,+ 6H_2O\)
Open complete paper
2
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.
Open complete paper
3
1991 · Chemistry · Physical Chemistry · Electrochemistry
IIT JEE 1991
Zinc granules are added in excess to a 500 ml. of 1.0 M nickel nitrate solution at 25oC until the equilibrium is reached. If the standard reduction potential of Zn2+ | Zn and Ni2+ | Ni are -0.75 V and -0.24 V respectively, find out the concentration of Ni2+ in solution at equilibrium.
Open complete paper
4
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]
Open complete paper
5
1992 · Chemistry · Physical Chemistry · Electrochemistry
IIT JEE 1992
An aqueous solution of NaCl on electrolysis gives H2(g), Cl2(g) and NaOH according to the reaction:
2Cl- (aq) + 2H2O = 2OH- (aq) + H2 (g) + Cl2 (g)
A direct current of 25 amperes with a current efficiency of 62 % is passed through 20 litres of NaCl solution (20% by weight). Write down the reactions taking place at the anode and cathode. How long will it take to produce 1kg of Cl2? What will be the molarity of the solution with respect to hydroxide ion? (Assume no loss due to evaporation)
Open complete paper
6
1993 · Chemistry · Physical Chemistry · Electrochemistry
IIT JEE 1993
Chromium metal can be plated out from an acidic solution containing CrO3 according to the following equation
CrO3 (aq) + 6H+ (aq) + 6e- \(\to\) Cr(s) + 3H2O
Calculate (i) how many grams of chromium will be plated out by 24,000 coulombs and (ii) how long will it take to plate out 1.5 g of chromium by using 12.5 amp current.
Open complete paper
7
1993 · Chemistry · Physical Chemistry · Electrochemistry
IIT JEE 1993
The standard reduction potential for the half-cell
\(NO_3^-\) + 2H+ (aq) + e \(\to\) NO2 (g) + H2O is 0.78 V
(i) Calculate the reduction potential in 8 M H+
(ii) What will be the reduction potential of the half-cell in a neutral solution? Assume all the other species to be at unit concentration.
Open complete paper
8
1994 · Chemistry · Physical Chemistry · Electrochemistry
IIT JEE 1994
The Edison storage cells is represented as
Fe(s) | FeO(s) | KOH (aq) | Ni2O3(s) | Ni(s)
The half-cell reactions are:
Ni2O3 + H2O (l) + 2e- \(\leftrightharpoons\) 2NiO(s) + 2OH-; Eo = +0.40V
FeO(s) + H2O(l) + 2e- \(\leftrightharpoons\) Fe(s) + 2OH-; Eo = -0.87V
(i) What is the cell reaction?
(ii) What is the cell e.m.f? How does it depend on the concentration of KOH?
(iii) What is the maximum amount of electrical energy that can be obtained from one mole of Ni2O3?
Open complete paper
9
1994 · Chemistry · Physical Chemistry · Electrochemistry
IIT JEE 1994
The standard reduction potential of the Ag+/Ag electrode at 298 K is 0.799V. Given that for AgI, Ksp = 8.7 \(\times\) 10-17, evaluate the potential of the Ag+/Ag electrode in a saturated solution of AgI. Also calculate the standard reduction potential of the I-/ AgI/Ag electrode.
Open complete paper
10
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)
Open complete paper
11
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
Open complete paper
12
1997 · Chemistry · Physical Chemistry · Electrochemistry
IIT JEE 1997
Calculate the equilibrium constant for the reaction
Fe2+ + Ce4+ \(\leftrightharpoons\) Fe3+ + Ce3+
(given \(E_{C{e^{4 + }}/C{e^{3 + }}}^o\) = 1.44 V; \(E_{F{e^{3 + }}/F{e^{2 + }}}^o\) = 0.68 V)
Open complete paper
13
1997 · Chemistry · Physical Chemistry · Electrochemistry
IIT JEE 1997
How many grams of silver could be plated out on a serving tray by electrolysis of a solution containing silver in +1 oxidation state for a period of 8.0 hours at a current of 8.46 amperes? What is the area of the tray if the thickness of the silver plating is 0.00254 cm? Density of silver is 10.5 g/cm3
Open complete paper
14
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.
Open complete paper
15
1998 · Chemistry · Physical Chemistry · Electrochemistry
IIT JEE 1998
Find the solubility product of a saturated solution of Ag2CrO4 in water at 298 K if the emf of the cell Ag|Ag+ (satd. Ag2CrO4 soln.) || Ag+ (0.1 M) | Ag is 0.164 V at 298 K.
Open complete paper
16
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.
Open complete paper
17
2000 · Chemistry · Physical Chemistry · Electrochemistry
IIT JEE 2000
Copper sulphate solution (250 mL) was electrolysed using platinum anode and a copper cathode. A constant current of 2mA was passed for 16 minutes. It was found that after electrolysis the absorbance of the solution was reduced to 50% of its original value. Calculate the concentration of copper sulphate in the solution to begin with.
Open complete paper
18
2000 · Chemistry · Physical Chemistry · Electrochemistry
IIT JEE 2000
The following electrochemical cell has been set up.
Pt(1) | Fe3+, Fe2+ (a = 1) | Ce4+, Ce3+ (a=1) | Pt(2)
Eo (Fe3+, Fe2+) = 0.77 V; Eo (Ce4+, Ce3+) = 1.61 V
If an ammeter is connected between the two platinum electrodes, predict the direction of flow of current. Will the current increase or decrease with time?
Open complete paper
19
2001 · Chemistry · Physical Chemistry · Electrochemistry
IIT JEE 2001
The standard potential of the following cell is 0.23V at 15oC and 0.21 V at 35oC.
Pt | H2 (g) | HCl (aq) | AgCl (s) | Ag (s)
(i) Write the cell reaction.
(ii) Calculate \(\Delta H^o\) and \(\Delta S^o\)m for the cell reaction by assuming that these quantities remain unchanged in the range 15oC to 35oC.
(iii) Calculate the solubility of AgCl in water at 25oC
Given : The standard reduction potential of the Ag+ (aq) / Ag (s) couple is 0.80 V at 25oC
Open complete paper
20
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)
Open complete paper

Showing 20 of 64 questions