Electrochemistry PYQs - Last 5 Years
KCET / Chemistry / Physical Chemistry / 18 recent questions
ChemistryPhysical Chemistry2022-2026
Practice 18 KCET 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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Chemistry / Physical Chemistry
2022-2026
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Last 5 Years Electrochemistry Questions
Showing 18 of 18 filtered questions.
1Electrochemistry
During the electrolysis of acidified water, $16$ g of $\text{O}_2$ gas is formed at anode. The volume of $\text{H}_2$ gas liberated at cathode under STP conditions is
MCQ+1 / -02026
2Electrochemistry
$\Lambda^0_{m(\text{NH}_4\text{OH})}$ is equal to ____
MCQ+1 / -02026
3Electrochemistry
Given below are the half-cell reactions:$\text{Mn}^{2+} + 2e^- \rightarrow \text{Mn} \quad (E^0 = -1.18\text{ V})$$2(\text{Mn}^{3+} + e^- \rightarrow \text{Mn}^{2+}) \quad (E^0 = +1.51\text{ V})$The $E^0_{cell}$ for $3\text{Mn}^{2+} \righta...
MCQ+1 / -02026
4Electrochemistry
The conductivity of centimolar solution of KCl at $298$ K is $0.021\text{ Ohm}^{-1}\text{cm}^{-1}$ and the resistance of the cell containing the solution at $298$ K is $60\,\Omega$. The value of cell constant ($G^*$) is __________.
MCQ+1 / -02026
5Electrochemistry
Match the following select the correct option for the quantity of electricity, in $\mathrm{Cmol}^{-1}$ required to
deposit various metals at cathode
$$
\begin{array}{|l|l|l|l|}
\hline & \text { List - I } & & \text { List- II } \\
\hline \...
deposit various metals at cathode
$$
\begin{array}{|l|l|l|l|}
\hline & \text { List - I } & & \text { List- II } \\
\hline \...
MCQ+1 / -02025
6Electrochemistry
For a given half cell, $\mathrm{Al}^{3+}+3 \mathrm{e}^{-} \rightarrow \mathrm{Al}$ on increasing of aluminium ion, the electrode potential will
MCQ+1 / -02025
7Electrochemistry
The electronic conductance depends on
MCQ+1 / -02025
8Electrochemistry
The correct statement/s about Galvanic cell is/are
(a) Current flows from cathode to anode
(b) Anode is positive terminal
(c) If $\mathrm{E}_{\text {cell }}<0$, then it is spontaneous reaction
(d) Cathode is positive terminal
(a) Current flows from cathode to anode
(b) Anode is positive terminal
(c) If $\mathrm{E}_{\text {cell }}<0$, then it is spontaneous reaction
(d) Cathode is positive terminal
MCQ+1 / -02025
9Electrochemistry
A current of 3 A is passed through a molten calcium salt for 1 hr 47 min 13 s . The mass of calcium deposited is
(Molar mass of $\mathrm{Ca}=40 \mathrm{~g} \mathrm{~mol}^{-1}$ )
(Molar mass of $\mathrm{Ca}=40 \mathrm{~g} \mathrm{~mol}^{-1}$ )
MCQ+1 / -02024
10Electrochemistry
The value of ' $A$ ' in the equation $\lambda_{\mathrm{m}}=\lambda_{\mathrm{m}}^{\circ}-A \sqrt{C}$ is same for the pair
MCQ+1 / -02024
11Electrochemistry
How many coulombs are required to oxidise 0.1 mole of $\mathrm{H}_2 \mathrm{O}$ to oxygen?
MCQ+1 / -02024
12Electrochemistry
Consider the following 4 electrodes
$$\begin{aligned}
& \mathrm{A}: \mathrm{Ag}^{+}(0.0001 \mathrm{M}) / \mathrm{Ag}(s) ; \\
& \mathrm{B}: \mathrm{Ag}^{+}(0.1 \mathrm{M}) / \mathrm{Ag}(s) ; \\
& \mathrm{C}: \mathrm{Ag}^{+}(0.01 \mathrm{M}) ...
$$\begin{aligned}
& \mathrm{A}: \mathrm{Ag}^{+}(0.0001 \mathrm{M}) / \mathrm{Ag}(s) ; \\
& \mathrm{B}: \mathrm{Ag}^{+}(0.1 \mathrm{M}) / \mathrm{Ag}(s) ; \\
& \mathrm{C}: \mathrm{Ag}^{+}(0.01 \mathrm{M}) ...
MCQ+1 / -02023
13Electrochemistry
During the electrolysis of brine, by using inert electrodes,
MCQ+1 / -02023
14Electrochemistry
The resistance of \(0.1 \mathrm{~M}\) weak acid \(\mathrm{H} A\) in a conductivity cell is \(2 \times 10^3 \mathrm{~Ohm}\). The cell constant of the cell is \(0.78 ~\mathrm{C} \mathrm{~m}^{-1}\) and \(\lambda_{\mathrm{m}}^{\circ}\) of acid ...
MCQ+1 / -02023
15Electrochemistry
Specific conductance of \(0.1 \mathrm{~M} \mathrm{~HNO}_3\) is \(6.3 \times 10^{-2} \mathrm{~ohm}^{-1} \mathrm{~cm}^{-1}\). The molar conductance of the solution is
MCQ+1 / -02022
16Electrochemistry
For spontaneity of a cell, which is correct?
MCQ+1 / -02022
17Electrochemistry
The molar conductivity is maximum for the solution of concentration
MCQ+1 / -02022
18Electrochemistry
In fuel cells _______ are used as catalysts.
MCQ+1 / -02022