Electrochemistry PYQs - Last 5 Years

MHT CET / Chemistry / Physical Chemistry / 175 recent questions

ChemistryPhysical Chemistry2022-2026

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Practice 175 MHT CET 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 25 of 175 filtered questions.

1Electrochemistry

Identify the overall oxidation reaction that occurs in lead storage cell during discharge.

2Electrochemistry

Calculate \(\mathrm{E}_{\text {cell }}^0\) if the equilibrium constant for following reaction is \(1.2 \times 10^6\).
\(2 \mathrm{Cu}_{(\mathrm{aq})}^{+} \longrightarrow \mathrm{Cu}_{(\mathrm{aq})}^{++}+\mathrm{Cu}_{(\mathrm{s})}\)

3Electrochemistry

Calculate \(E^{\circ}\) cell for following.
\(\mathrm{Zn}(s)\left|\mathrm{Zn}^{++}(1 \mathrm{M}) \| \mathrm{Pb}^{++}(1 \mathrm{M})\right| \mathrm{Pb}(s)\) if \(E_{\mathrm{Zn}}^{\circ}=-0.763 \mathrm{~V}\) and $$E_{\mathrm{Pb}}^{\circ}=-0.12...

4Electrochemistry

What is the molar conductivity of \(0.005 \mathrm{~M} \mathrm{~NaI}\) solution if it's conductivity is
\(6.065 \times 10^{-4} \Omega^{-1} \mathrm{~cm}^{-1} \text { ? }\)

5Electrochemistry

Which from the following expression represents molar conductivity of an electrolyte \(\mathrm{A}_2 B_3\) type?

6Electrochemistry

Which from following is strongest reducing agent?

7Electrochemistry

Electrolytic cells containing \(\mathrm{Zn}\) and \(\mathrm{Al}\) salt solutions are connected in series. If \(6.5 \mathrm{~g}\) of \(\mathrm{Zn}\) is deposited in one cell calculate mass of \(\mathrm{Al}\) deposited in second cell (molar m...

8Electrochemistry

Calculate \(\Delta \mathrm{G}^{\circ}\) for the reaction \(\mathrm{Mg}_{(\mathrm{s})}+\mathrm{Sn}_{(\mathrm{aq})}^{++} \longrightarrow \mathrm{Mg}_{(\mathrm{aq})}^{++}+\mathrm{Sn}_{(\mathrm{s})}\) if \(\mathrm{E}_{\text {cell }}^0\) is $$2....

9Electrochemistry

A conductivity cell containing \(5 \times 10^{-4} \mathrm{~M} \mathrm{~NaCl}\) solution develops resistance \(14000 \mathrm{~ohms}\) at \(25^{\circ} \mathrm{C}\). Calculate the conductivity of solution if the cell constant is $$0.84 \mathrm...

10Electrochemistry

Calculate the \(\mathrm{E}_{\text {cell }}\) for \(\mathrm{Zn}_{(\mathrm{s})}\left|\mathrm{Zn}_{(0.1 \mathrm{M})}^{++}\right|\left|\mathrm{Cr}_{(0.1 \mathrm{M})}^{+++}\right| \mathrm{Cr}_{(\mathrm{s})}\) at \(25^{\circ} \mathrm{C}\) if $$\m...

11Electrochemistry

Which of the following expressions represents molar conductivity of \(\mathrm{AB}_3\) type electrolyte?

12Electrochemistry

Which among the following is CORRECT formula for determination of cell constant?

13Electrochemistry

The molar conductivity of \(0.02 \mathrm{~M} \mathrm{~AgI}\) at \(298 \mathrm{~K}\) is \(142.3 \Omega^{-1} \mathrm{~cm}^2 \mathrm{~mol}^{-1}\). What is its conductivity?

14Electrochemistry

Find the number of faradays of electricity required to produce \(45 \mathrm{~g}\) of \(\mathrm{Al}\) from molten \(\mathrm{Al}_2 \mathrm{O}_3\).
(At. mass of \(\mathrm{Al}=27\) )

15Electrochemistry

Calculate the \(\mathrm{E}_{\text {cell }}^{\circ}\) for \(\mathrm{Zn}_{(\mathrm{s})}\left|\mathrm{Zn}_{(\mathrm{IM})}^{++}\right|\left|\mathrm{Cd}_{(\mathrm{IM})}^{++}\right| \mathrm{Cd}_{(\mathrm{s})}\) at $$25^{\circ} \mathrm{C}\left[\ma...

16Electrochemistry

Which from following sentences is NOT correct?

17Electrochemistry

What mass of \(\mathrm{Mg}\) is produced during electrolysis of molten \(\mathrm{MgCl}_2\) by passing \(2 \mathrm{~amp}\) current for 482.5 second?
(Molar mass \(\mathrm{Mg}=24 \mathrm{~g} \mathrm{~mol}^{-1}\))

18Electrochemistry

Which of the following is NOT a difficulty in setting SHE?

19Electrochemistry

Conductivity of a solution is \(1.26 \times 10^{-2} \Omega^{-1} \mathrm{~cm}^{-1}\) Calculate molar conductivity for \(0.01 \mathrm{~M}\) solution.

20Electrochemistry

Calculate the conductivity of \(0.02 \mathrm{~M}\) electrolyte solution if its molar conductivity \(407.2 \Omega^{-1} \mathrm{~cm}^2 \mathrm{~mol}^{-1}\) ?

21Electrochemistry

Calculate \(E_{\text {cell }}^{\circ}\) in which following reaction occurs. \(\mathrm{Mg}_{(\mathrm{s})}+2 \mathrm{Ag}_{(\mathrm{IM})}^{+} \rightarrow \mathrm{Mg}_{(1 \mathrm{M})}^{+}+2 \mathrm{Ag}_{(\mathrm{s})}\) if $$\mathrm{E}_{\mathrm{...

22Electrochemistry

What happens when solution of an electrolyte is diluted?

23Electrochemistry

Calculate \(\wedge_0\) of \(\mathrm{CH}_2 \mathrm{ClCOOH}\) if \(\wedge_0\) for \(\mathrm{HCl}, \mathrm{KCl}\) and \(\mathrm{CH}_2 \mathrm{ClCOOK}\) are \(4.2,1.5\) and \(1.1 \Omega^{-1} \mathrm{~cm}^2 \mathrm{~mol}^{-1}\) respectively?

24Electrochemistry

Which of the following is NOT an example of secondary voltaic cell?

25Electrochemistry

How long will it take to produce \(5.4 \mathrm{~g}\) of \(\mathrm{Ag}\) from molten \(\mathrm{AgCl}\) by passing \(5 \mathrm{~amp}\) current?
(Molar mass Ag = \(108 \mathrm{~g} \mathrm{~mol}^{-1}\) )