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Electrochemistry

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Q JEE MAIN 2020
For an electrochemical cell, $\mathrm{Sn}(\mathrm{s})\left|\mathrm{Sn}^{2+}(\mathrm{aq}, 1 \mathrm{M}) \| \mathrm{Pb}^{2+}(\mathrm{aq}, 1 \mathrm{M})\right| \mathrm{Pb}(\mathrm{s})$ the ratio $\frac{\left[\mathrm{Sn}^{2+}\right]}{\left[\mathrm{Pb}^{2+}\right]}$ when this cell attains equilibrium is $\_\_\_\_$ .
(Given:...
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Q JEE-MAIN 2020
An acidic solution of dichromate is electrolyzed for 8 minutes using 2 A current. As per the following equation
$...
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Q JEE-MAIN 2020
The incorrect statement(s) among (a) – (d) regarding acid rain is (are)
(a) It can corrode water pipes.
(b) It can damage structures made up...
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Q JEE MAIN 2021
The resistance of a conductivity cell with cell constant $1.14 \mathrm{~cm}^{-1}$, containing 0.001 M KCl at 298 K is $1500 \Omega$. The molar conductivity of...
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Q JEE MAIN 2019
A solution of $\mathrm{Ni}\left(\mathrm{NO}_3\right)_2$ is electrolysed between platinum electrodes using 0.1 Faraday electricity. How many mole of Ni will be deposited at the cathode?
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Q JEE-MAIN 2021
For the galvanic cell
$$ \mathrm{Zn}(\mathrm{~s})+\mathrm{Cu}^{2+}(0.02 \mathrm{M}) \rightarrow \mathrm{Zn}^{2+}(0.04 \mathrm{M})+\mathrm{Cu}(\mathrm{~s}) $$ $\mathrm{E}_{\text {cell }}=$ $\_\_\_\_$ $\times 10^{-2} \mathrm{~V}$. (Nearest integer) $$ \left[\text { Use }:...
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Q JEE MAIN 2020
Given that the standard potentials $\left(\mathrm{E}^{\circ}\right)$ of $\mathrm{Cu}^{2+} / \mathrm{Cu}$ and $\mathrm{Cu}^{+} / \mathrm{Cu}$ are 0.34 V and 0.522 V respectively, the $\mathrm{E}^{\circ}$ of $...
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Q JEE MAIN 2021
Match List-I with List-II
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Q JEE MAIN 2019
In the cell $\mathrm{Pt}(\mathrm{s})\left|\mathrm{H}_2(\mathrm{~g}, 1 \mathrm{bar})\right| \mathrm{HCl}(\mathrm{aq})|\mathrm{AgCl}(\mathrm{s})| \mathrm{Ag}(\mathrm{s}) \mid \mathrm{Pt}(\mathrm{s})$ the cell potential is 0.92 V when a $10^{-6}$ molal HCl solution is used. The...
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Q JEE MAIN 2021
Given below are two statements:
Statement 1: The limiting molar conductivity of KCl (strong electrolyte) is higher compared to that of $\mathrm{CH}_3 \mathrm{COOH}$ (weak...
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