Electrochemistry PYQs - Last 5 Years
TS EAMCET / Chemistry / Physical Chemistry / 28 recent questions
ChemistryPhysical Chemistry2021-2025
Practice 28 TS EAMCET 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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Last 5 Years Electrochemistry Questions
Showing 28 of 28 filtered questions.
1Electrochemistry
A current of 0.5 ampere is passed through molten $\mathrm{AlCl}_3$ for 96.5 seconds. The mass of aluminium deposited at cathode is $x \mathrm{mg}$ and volume of chlorine liberated (at STP) at anode is $y \mathrm{~mL} . x$ and $y$ are respec...
MCQ+1 / -02025
2Electrochemistry
At 298 K the equilibrium constant for the reaction $M(s)+2 \mathrm{Ag}^{+}(a q) \longrightarrow M^{2+}(a q)+2 \mathrm{Ag}(s)$ is $10^{15}$. What is the $E_{\text {cell }}^{\ominus}$ (in V) for this reaction?
$$ \left(\frac{2.303 R T}{F}\rig...
$$ \left(\frac{2.303 R T}{F}\rig...
MCQ+1 / -02025
3Electrochemistry
The order of negative standard potential values of Li, $\mathrm{Na}, \mathrm{K}$ is
MCQ+1 / -02025
4Electrochemistry
The Gibbs energy change of the reaction (in $\mathrm{kJ} \mathrm{mol}^{-1}$ ) corresponding to the following cell
$\mathrm{Cr}\left|\mathrm{Cr}^{3+}(0.1 \mathrm{M}) \| \mathrm{Fe}^{2+}(0.001 \mathrm{M})\right| \mathrm{Fe}$
(Given $E_{\mathr...
$\mathrm{Cr}\left|\mathrm{Cr}^{3+}(0.1 \mathrm{M}) \| \mathrm{Fe}^{2+}(0.001 \mathrm{M})\right| \mathrm{Fe}$
(Given $E_{\mathr...
MCQ+1 / -02025
5Electrochemistry
The incorrect statement about Castner-kellner cell process is
MCQ+1 / -02025
6Electrochemistry
The incorrect statement about Castner-kellner cell process is
MCQ+1 / -02025
7Electrochemistry
The mole conductivity of acetic acid solution at infinite dilution is $390 \mathrm{~S} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$. What is the molar conductivity of 0.01 M acetic acid solution (in $\mathrm{S} \mathrm{cm}^2 \mathrm{~mol}^{-1}$ )?
(G...
(G...
MCQ+1 / -02025
8Electrochemistry
At 298 K , if emf of the cell corresponding to the reaction $\mathrm{Zn}(s)+2 \mathrm{H}^{+}(a q) \longrightarrow \mathrm{Zn}^{2+}(0.01 \mathrm{M})+\mathrm{H}_2(g) (1 \mathrm{~atm})$ is 0.28 V , then the pH of the solution at the hydrogen e...
MCQ+1 / -02025
9Electrochemistry
Electrolysis of aqueous copper (II) sulphate between Pt electrodes gives ' $X^{\prime}$ at anode and ' $Y^{\prime}$ at cathode. $X$ and $Y$ are respectively.
MCQ+1 / -02025
10Electrochemistry
Identify the correct statements from the following
(A) At 298 K , the potential of hydrogen electrotle placed in a solution of $\mathrm{pH}=10$, is -0.59 V
(B) The limiting molar conductivity of $\mathrm{Ca}^{2+}$ and $\mathrm{Cl}^{-}$is 1...
(A) At 298 K , the potential of hydrogen electrotle placed in a solution of $\mathrm{pH}=10$, is -0.59 V
(B) The limiting molar conductivity of $\mathrm{Ca}^{2+}$ and $\mathrm{Cl}^{-}$is 1...
MCQ+1 / -02024
11Electrochemistry
If the degree of dissociation of formic acid is $11.0 \%$, the molar conductivity of 0.02 M solution of it is
(Given, $\lambda^{\circ}\left(\mathrm{H}^{+}\right)=349.6 \mathrm{~S} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$ $\lambda^{\circ}\left(\ma...
(Given, $\lambda^{\circ}\left(\mathrm{H}^{+}\right)=349.6 \mathrm{~S} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$ $\lambda^{\circ}\left(\ma...
MCQ+1 / -02024
12Electrochemistry
0.592 g of copper is deposited in 60 minutes by passing0.5 A current through a solution of copper (II) sulphate. The electro chemical equivalent of copper (II) (in $\mathrm{gC}^{-1}$ ) is( $F=96500 \mathrm{C} \mathrm{mol}^{-1}$ )
MCQ+1 / -02024
13Electrochemistry
The molar conductivity of 0.02 M solution of an electrolyte is $124 \times 10^{-4} \mathrm{~S} \mathrm{~m}^2 \mathrm{~mol}^{-1}$.
What is the resistance of same solution (in ohms), kept in a cell of cell constant $129 \mathrm{~m}^{-1}$ ?
What is the resistance of same solution (in ohms), kept in a cell of cell constant $129 \mathrm{~m}^{-1}$ ?
MCQ+1 / -02024
14Electrochemistry
The standard electrode potentials $E^{\circ}(\mathrm{V})$ for $\mathrm{Li}^{+} / \mathrm{Li}, \mathrm{Na}^{+} / \mathrm{Na}$ respectively are
MCQ+1 / -02024
15Electrochemistry
Two statements are given below.Statement I : Molten NaCl is electrolysed using Pt electrodes. $\mathrm{Cl}_{2}$ is liberated at anode.Statement II : Aqueous $\mathrm{CuSO}_{4}$ is electrolysed using Pt electrodes. $\mathrm{O}_{2}$ is libera...
MCQ+1 / -02024
16Electrochemistry
A current of 15.0 A is passed through a solution of $\mathrm{CrCl}_2$ for 45 minutes. The volume of $\mathrm{Cl}_2$ (in L ) obtained at the anode at 1 atm and 273 K is around (IF $=96500 \mathrm{C} \mathrm{mol}^{-1}$, atomic wt. of $\mathrm...
MCQ+1 / -02023
17Electrochemistry
The reduction potential of a half-cell consisting of a Pt electrode immersed in $2.0 \mathrm{M} \mathrm{Fe}^{2+}$ and $0.02 \mathrm{M} \mathrm{Fe}^{3+}$ solution (in V) is
Given : $\left(\frac{2.303 R T}{F}=0.059, E_{\mathrm{Fe}^{3+} \mid \...
Given : $\left(\frac{2.303 R T}{F}=0.059, E_{\mathrm{Fe}^{3+} \mid \...
MCQ+1 / -02023
18Electrochemistry
The conductivity of a solution of concentration $0.1 \mathrm{~mol} \mathrm{~L}^{-1}$ of a weak monobasic acid $(\mathrm{HA})$ (in $\mathrm{S} \mathrm{cm}^{-1}$ ) is (Given : $\Lambda^{\circ}{ }_{\mathrm{HA}}=400 \mathrm{Scm}^2 \mathrm{~mol}...
MCQ+1 / -02023
19Electrochemistry
$A$ and $B$ are two metals. The standard reduction potential of $A^{+}(a q) / A(s)$ and $B^{+}(a q) / B(s)$ are -0.5 V and +0.5 V respectively. What is the $\log K_c$ value for the following reaction at 298 K ?
$$ \begin{aligned} & A(s)+B^{...
$$ \begin{aligned} & A(s)+B^{...
MCQ+1 / -02023
20Electrochemistry
The electrode potential of chlorine electrode is maximum, when the concentration of chloride ion in the solution (in $\mathrm{mol} \mathrm{L}^{-1}$ ) is $X$. What is the value of $X$ ?
MCQ+1 / -02023
21Electrochemistry
At 300 K , the conductivity of $0.01 \mathrm{~mol} \mathrm{dm}^{-3}$ aqueous solution of acetic acid is $19.5 \times 10^{-5} \mathrm{mho} \mathrm{cm}^{-1}$ and limiting molar conductivity of acetic acid at the same temperature is $390 \math...
MCQ+1 / -02023
22Electrochemistry
The variation of $\lambda_{\mathrm{m}}$ of acetic acid with concentration is correctly represented as
MCQ+1 / -02022
23Electrochemistry
Electrolysis of aqueous $\mathrm{Na}_2 \mathrm{SO}_4$ was carried out by passing a current of 3 ampere for 10 min . The volume of the gas (in litre) at STP at the anode of the cell is approximately
MCQ+1 / -02022
24Electrochemistry
The $E^{\circ}$ of $\mathrm{Ce}^{4+} / \mathrm{Ce}^{3+}=1.6 \mathrm{~V}, \mathrm{Fe}^{3+} / \mathrm{Fe}^{2+}=0.76 \mathrm{~V}$ the $E^{\circ}$ of $\mathrm{Fe}^{3+}$ oxidising $\mathrm{Ce}^{3+}$ is
MCQ+1 / -02022
25Electrochemistry
Given, $E_{\mathrm{Mn}^{7+} / \mathrm{Mn}^{2+}}^{\circ}=1.51 \mathrm{~V}, E_{\mathrm{Mn}^{4+} / \mathrm{Mn}^{2+}}^{\circ}=1.23 \mathrm{~V}$ Calculate the $E_{\mathrm{Mn}^{7+} / \mathrm{Mn}^{4+}}^{\circ}$.
MCQ+1 / -02022
26Electrochemistry
In two separate experiments, the same quantity of electricity was passed through silver and gold solutions. [Assume ' $l$ ' constant]. The amounts of Ag and Au deposited are 2.15 and 1.31 g , respectively. The valency of gold is
[atomic mas...
[atomic mas...
MCQ+1 / -02022
27Electrochemistry
The electric charge for electrode deposition of one equivalent of a substance is equal to
MCQ+1 / -02022
28Electrochemistry
On passing a current of 1.2 A through a solution of salt of copper for $40 \mathrm{~min}, 0.96 \mathrm{~g}$ of copper was deposited. The equivalent weight of copper in g is
MCQ+1 / -02022