Electrochemistry PYQs - Last 5 Years
JEE Main / Chemistry / Physical Chemistry / 124 recent questions
ChemistryPhysical Chemistry2022-2026
Practice 124 JEE Main Chemistry questions from Electrochemistry. Use the year-wise and type-wise breakdown to prioritize recent PYQs, then continue into the question list below.
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2022-2026
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124PYQs
INTEGER52.4%
MCQ47.6%
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#1 Medium79
#2 Easy39
#3 Hard6
124 in last 5 years124 in last 10 years
Last 5 Years Electrochemistry Questions
Showing 24 of 124 filtered questions.
1Electrochemistry
The specific conductance of \(0.0025 ~\mathrm{M}\) acetic acid is \(5 \times 10^{-5} \mathrm{~S} \mathrm{~cm}^{-1}\) at a certain temperature. The dissociation constant of acetic acid is __________ \(\times ~10^{-7}\) (Nearest integer)
Cons...
Cons...
INTEGER+4 / -12023
2Electrochemistry
In which of the following half cells, electrochemical reaction is pH dependent?
MCQ+4 / -12022
3Electrochemistry
A dilute solution of sulphuric acid is electrolysed using a current of 0.10 A for 2 hours to produce hydrogen and oxygen gas. The total volume of gases produced a STP is _____________ cm3. (Nearest integer)
[Given : Faraday constant F = 965...
[Given : Faraday constant F = 965...
INTEGER+4 / -12022
4Electrochemistry
The cell potential for the given cell at 298 K
Pt| H2 (g, 1 bar) | H+ (aq) || Cu2+ (aq) | Cu(s)
is 0.31 V. The pH of the acidic solution is found to be 3, whereas the concentration of Cu2+ is 10\(-\)x M. The value of x is ___________.
(Give...
Pt| H2 (g, 1 bar) | H+ (aq) || Cu2+ (aq) | Cu(s)
is 0.31 V. The pH of the acidic solution is found to be 3, whereas the concentration of Cu2+ is 10\(-\)x M. The value of x is ___________.
(Give...
INTEGER+4 / -12022
5Electrochemistry
Resistance of a conductivity cell (cell constant \(129 \mathrm{~m}^{-1}\)) filled with \(74.5 \,\mathrm{ppm}\) solution of \(\mathrm{KCl}\) is \(100 \,\Omega\) (labelled as solution 1). When the same cell is filled with \(\mathrm{KCl}\) sol...
INTEGER+4 / -12022
6Electrochemistry
For a cell, \(\mathrm{Cu}(\mathrm{s})\left|\mathrm{Cu}^{2+}(0.001 \,\mathrm{M}) \| \mathrm{Ag}^{+}(0.01 \,\mathrm{M})\right| \mathrm{Ag}(\mathrm{s})\)
the cell potential is found to be \(0.43 \mathrm{~V}\) at \(298 \mathrm{~K}\). The magnit...
the cell potential is found to be \(0.43 \mathrm{~V}\) at \(298 \mathrm{~K}\). The magnit...
INTEGER+4 / -12022
7Electrochemistry
The quantity of electricity in Faraday needed to reduce 1 mol of Cr2O\(_7^{2 - }\) to Cr3+ is ____________.
INTEGER+4 / -12022
8Electrochemistry
For the given reactions
Sn2+ + 2e\(-\) \(\to\) Sn
Sn4+ + 4e\(-\) \(\to\) Sn
the electrode potentials are ; \(E_{S{n^{2 + }}/Sn}^o = - 0.140\) V and \(E_{S{n^{4 + }}/Sn}^o = + 0.010\) V. The magnitude of standard electrode potential for $$...
Sn2+ + 2e\(-\) \(\to\) Sn
Sn4+ + 4e\(-\) \(\to\) Sn
the electrode potentials are ; \(E_{S{n^{2 + }}/Sn}^o = - 0.140\) V and \(E_{S{n^{4 + }}/Sn}^o = + 0.010\) V. The magnitude of standard electrode potential for $$...
INTEGER+4 / -12022
9Electrochemistry
Match List - I with List - II.
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overflow:hidden;padding:10px 5px;word-break:norm...
MCQ+4 / -12022
10Electrochemistry
The limiting molar conductivities of NaI, NaNO3 and AgNO3 are 12.7, 12.0 and 13.3 mS m2 mol\(-\)1, respectively (all at 25\(^\circ\)C). The limiting molar conductivity of AgI at this temperature is ____________ mS m2 mol\(-\)1.
INTEGER+4 / -12022
11Electrochemistry
For the reaction taking place in the cell :
Pt (s)| H2 (g)|H+(aq) || Ag+(aq) |Ag (s)
E\(_{cell}^o\) = + 0.5332 V.
The value of \(\Delta\)fG\(^\circ\) is ______________ kJ mol\(-\)1. (in nearest integer)
Pt (s)| H2 (g)|H+(aq) || Ag+(aq) |Ag (s)
E\(_{cell}^o\) = + 0.5332 V.
The value of \(\Delta\)fG\(^\circ\) is ______________ kJ mol\(-\)1. (in nearest integer)
INTEGER+4 / -12022
12Electrochemistry
In 3d series, the metal having the highest M2+/M standard electrode potential is :
MCQ+4 / -12022
13Electrochemistry
Given below are two statements :
Statement I : For KI, molar conductivity increases steeply with dilution
Statement II : For carbonic acid, molar conductivity increases slowly with dilution
In the light of the above statements, choose the c...
Statement I : For KI, molar conductivity increases steeply with dilution
Statement II : For carbonic acid, molar conductivity increases slowly with dilution
In the light of the above statements, choose the c...
MCQ+4 / -12022
14Electrochemistry
The \({\left( {{{\partial E} \over {\partial T}}} \right)_P}\) of different types of half cells are as follows:
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MCQ+4 / -12022
15Electrochemistry
Cu(s) + Sn2+ (0.001M) \(\to\) Cu2+ (0.01M) + Sn(s)
The Gibbs free energy change for the above reaction at 298 K is x \(\times\) 10\(-\)1 kJ mol\(-\)1. The value of x is __________. [nearest integer]
[Given : $$E_{C{u^{2 + }}/Cu}^\Theta = 0...
The Gibbs free energy change for the above reaction at 298 K is x \(\times\) 10\(-\)1 kJ mol\(-\)1. The value of x is __________. [nearest integer]
[Given : $$E_{C{u^{2 + }}/Cu}^\Theta = 0...
INTEGER+4 / -12022
16Electrochemistry
The amount of charge in \(\mathrm{F}\) (Faraday) required to obtain one mole of iron from \(\mathrm{Fe}_{3} \mathrm{O}_{4}\) is ___________. (Nearest Integer)
INTEGER+4 / -12022
17Electrochemistry
In a cell, the following reactions take place
\(\matrix{ {F{e^{2 + }} \to F{e^{3 + }} + {e^ - }} & {E_{F{e^{3 + }}/F{e^{2 + }}}^o = 0.77\,V} \cr {2{I^ - } \to {I_2} + 2{e^ - }} & {E_{{I_2}/{I^ - }}^o = 0.54\,V} \cr }\)
The stan...
\(\matrix{ {F{e^{2 + }} \to F{e^{3 + }} + {e^ - }} & {E_{F{e^{3 + }}/F{e^{2 + }}}^o = 0.77\,V} \cr {2{I^ - } \to {I_2} + 2{e^ - }} & {E_{{I_2}/{I^ - }}^o = 0.54\,V} \cr }\)
The stan...
INTEGER+4 / -12022
18Electrochemistry
A solution of Fe2(SO4)3 is electrolyzed for 'x' min with a current of 1.5 A to deposit 0.3482 g of Fe. The value of x is ___________. [nearest integer]
Given : 1 F = 96500 C mol\(-\)1
Atomic mass of Fe = 56 g mol\(-\)1
Given : 1 F = 96500 C mol\(-\)1
Atomic mass of Fe = 56 g mol\(-\)1
INTEGER+4 / -12022
19Electrochemistry
The correct order of reduction potentials of the following pairs is
A. Cl2/Cl\(-\)
B. I2/I\(-\)
C. Ag+/Ag
D. Na+/Na
E. Li+/Li
Choose the correct answer from the options given below.
A. Cl2/Cl\(-\)
B. I2/I\(-\)
C. Ag+/Ag
D. Na+/Na
E. Li+/Li
Choose the correct answer from the options given below.
MCQ+4 / -12022
20Electrochemistry
The cell potential for \(\mathrm{Zn}\left|\mathrm{Zn}^{2+}(\mathrm{aq})\right|\left|\mathrm{Sn}^{x+}\right| \mathrm{Sn}\) is \(0.801 \mathrm{~V}\) at \(298 \mathrm{~K}\). The reaction quotient for the above reaction is \(10^{-2}\). The numb...
INTEGER+4 / -12022
21Electrochemistry
The spin-only magnetic moment value of M3+ ion (in gaseous state) from the pairs Cr3+ / Cr2+, Mn3+ / Mn2+, Fe3+ / Fe2+ and Co3+ / Co2+ that has negative standard electrode potential, is ____________ B.M. [Nearest integer]
INTEGER+4 / -12022
22Electrochemistry
The molar conductivity of a conductivity cell filled with 10 moles of 20 mL NaCl solution is \({\Lambda _{m1}}\) and that of 20 moles another identical cell heaving 80 mL NaCl solution is \({\Lambda _{m2}}\). The conductivities exhibited by...
MCQ+4 / -12022
23Electrochemistry
The cell potential for the following cell
Pt |H2(g)|H+ (aq)|| Cu2+ (0.01 M)|Cu(s)
is 0.576 V at 298 K. The pH of the solution is __________. (Nearest integer)
(Given : \(E_{C{u^{2 + }}/Cu}^o = 0.34\) V and \({{2.303\,RT} \over F} = 0.06\) V...
Pt |H2(g)|H+ (aq)|| Cu2+ (0.01 M)|Cu(s)
is 0.576 V at 298 K. The pH of the solution is __________. (Nearest integer)
(Given : \(E_{C{u^{2 + }}/Cu}^o = 0.34\) V and \({{2.303\,RT} \over F} = 0.06\) V...
INTEGER+4 / -12022
24Electrochemistry
The resistance of a conductivity cell containing 0.01 M KCl solution at 298 K is 1750 \(\Omega\). If the conductivity of 0.01 M KCl solution at 298 K is 0.152 \(\times\) 10\(-\)3 S cm\(-\)1, then the cell constant of the conductivity cell i...
INTEGER+4 / -12022