Electrochemistry PYQs - Last 5 Years

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All Electrochemistry PYQs Last 10 Years Create chapter test

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 50 of 175 filtered questions.

1Electrochemistry

Which of the following expressions for conductivity of solution of an electrolyte is NOT correct?

2Electrochemistry

If $\mathrm{E}^{\circ}$ cell for $\mathrm{Cd}_{(\mathrm{s})}\left|\mathrm{Cd}_{(\mathrm{IM})}^{2+} \square \mathrm{Ag}_{(1 \mathrm{M})}^{+}\right| \mathrm{Ag}_{(\mathrm{s})}$ is 1.2 V . What is the emf of the cell at $25^{\circ} \mathrm{C}$...

3Electrochemistry

Which of the following statements is NOT correct for $\mathrm{H}_2-\mathrm{O}_2$ fuel cell?

4Electrochemistry

Calculate the amount of electricity required to convert 1.1 mol of $\mathrm{Cr}_2 \mathrm{O}_7^{2-}$ to $\mathrm{Cr}^{+3}$ in acidic medium.

5Electrochemistry

The molar conductivity of 0.02 M KCl solution is $410 \Omega^{-1} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$ at $25^{\circ} \mathrm{C}$. Calculate its conductivity?

6Electrochemistry

A conductivity cell dipped on 0.05 M KCl has resistance 600 ohm. If conductivity is $0.0015 \mathrm{ohm}^{-1} \mathrm{~cm}^{-1}$. What is the value of cell constant?

7Electrochemistry

The limiting molar conductivities $\left(\Lambda_0\right)$ for NaCl , KBr and KCl are 126,152 and $150 \mathrm{~S} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$ respectively. What is the $\Lambda_0$ of NaBr ?

8Electrochemistry

What is the cell constant, if two platinum electrodes in conductivity cell are separated by 0.92 cm and area of cross section is $1.2 \mathrm{~cm}^2$ ?

9Electrochemistry

Which from following expressions is used to calculate $\mathrm{E}_{\text {cell }}$ for the following cell at $25^{\circ} \mathrm{C}$ ?
$$\mathrm{Pb}_{(\mathrm{s})}\left|\mathrm{Pb}_{(\mathrm{1M})}^{++} \| \mathrm{Ag}_{(\mathrm{10M})}^{+}\ri...

10Electrochemistry

Which from following is NOT true about electrolysis of molten NaCl ?

11Electrochemistry

The resistance of decimolar solution of NaCl is 30 ohms. Calculate the conductivity of solution if the cell constant is $0.33 \mathrm{~cm}^{-1}$.

12Electrochemistry

Calculate the quantity of electricity required to liberate 0.1 mole of chlorine gas during electrolysis of molten sodium chloride.

13Electrochemistry

Which of the following changes occurs during the discharging of lead accumulator?

14Electrochemistry

The resistance of a conductivity cell of 0.1 M KCl solution is 120 ohm and conductivity is $1.64 \times 10^{-4} \mathrm{~S} \mathrm{~cm}^{-1}$. What is the value of cell constant?

15Electrochemistry

Which from the following concentrations of a weak electrolyte solution exhibits maximum molar conductivity?

16Electrochemistry

Consider the following cell
$\mathrm{E}^{\circ}$ cell $=1.007 \mathrm{~V}$ and $\mathrm{E}^{\circ}$ calomel $=0.242 \mathrm{~V}$ What is the standard potential of Zn ?

17Electrochemistry

What is the conductivity of 0.05 M NaOH solution having resistance 31.5 ohm and cell constant $0.315 \mathrm{~cm}^{-1}$ ?

18Electrochemistry

Which from following equations represents a correct relationship between standard cell potential and equilibrium constant for cell reaction?

19Electrochemistry

What is the number of faraday required to produce 0.18 g aluminium at cathode during electrolysis of molten $\mathrm{AlCl}_3$ ?
(Molar mass of $\mathrm{Al}=27 \mathrm{~g} \mathrm{~mol}^{-1}$ )

20Electrochemistry

Calculate the cell constant of conductivity cell containing 0.1 M KCl solution having resistance $60 \Omega$ and conductivity $0.014 \Omega^{-1} \mathrm{~cm}^{-1}$ at $25^{\circ} \mathrm{C}$.

21Electrochemistry

The $\mathrm{E}_{\text {cell }}^{+}$of $\mathrm{Cu}_{(\mathrm{s})}\left|\mathrm{Cu}_{(\mathrm{1M})}^{++} \| \mathrm{Ag}_{(\mathrm{1M})}^{+}\right| \mathrm{Ag}_{(\mathrm{s})}$ is 0.647 volt. Calculate the $\mathrm{E}_{\mathrm{Ag}}^{\circ}$ i...

22Electrochemistry

Calculate the mass of ' Ca ' deposited at cathode by passing 0.8 ampere current through molten $\mathrm{CaCl}_2$ in 60 minutes.
[Molar mass of $\mathrm{Ca}=40 \mathrm{~g} \mathrm{~mol}^{-1}$ ]

23Electrochemistry

The conductivity of 0.02 M solution of $\mathrm{AgNO}_3$ is $0.00216 \Omega^{-1} \mathrm{~cm}^{-1}$ at 298 K . What is its molar conductivity?

24Electrochemistry

Calculate the percentage dissociation of 0.05 M solution of weak electrolyte if its molar conductivity and molar conductivity at infinite dilution are respectively. $3.3 \Omega^{-1} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$ and $132 \Omega^{-1} \m...

25Electrochemistry

What is the decreasing order of deposition of metal on electrode if standard reduction potentials are given as -
$\mathrm{Ag}^{+}\left|\mathrm{Ag}=0.80 \mathrm{~V}, \mathrm{Cu}^{2+}\right| \mathrm{Cu}=0.337 \mathrm{~V}$
$\mathrm{Sn}^{2+}\le...

26Electrochemistry

The resistance of conductivity cell filled with 0.1 M KCl solution is 100 ohm and conductivity is $1.70 \times 10^{-4} \mathrm{~S} \mathrm{~cm}^{-1}$. What is the cell constant of the cell?

27Electrochemistry

Which of the following element is used in photoelectric cell?

28Electrochemistry

The conductivity of 0.02 M KCl solution is 0.00250 ohm $^{-1} \mathrm{~cm}^{-1}$. What is its molar conductivity?

29Electrochemistry

When fused NaCl undergoes electrolysis the product formed at cathode is

30Electrochemistry

Which of the following cannot be used as standard solution for determination of cell constant of conductivity cell?

31Electrochemistry

Cell constant of a conductivity cell is $0.9 \mathrm{~cm}^{-1}$ and resistance shown by $\mathrm{AgNO}_3$ solution is 6530 ohm. What is the conductivity of $\mathrm{AgNO}_3$ solution?

32Electrochemistry

What is the concentration of an electrolyte solution to have molar conductivity of $101 \Omega^{-1} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$ and conductivity of $1.01 \times 10^{-2} \Omega^{-1} \mathrm{~cm}^{-1}$ at $298 \mathrm{~K} ?$

33Electrochemistry

Which of the following substances conducts electricity?

34Electrochemistry

What is the conductivity of 0.05 M KCl solution if cell constant is $1.32 \mathrm{~cm}^{-1}$ and resistance is 528 ohm?

35Electrochemistry

A conductivity cell dipped in 0.05 MKCl has resistance 600 ohm. If conductivity is $0.0012 \mathrm{ohm}^{-1} \mathrm{~cm}^{-1}$. What is the value of cell constant?

36Electrochemistry

Which of the following units of electrical measurement is not equivalent to 1 Siemen?

37Electrochemistry

Calculate the $\mathrm{E}_{\text {cell }}^{\circ}$ of
$\mathrm{Al}\left|\mathrm{Al}_2\left(\mathrm{SO}_4\right)_{3(\mathrm{1M})}\right|\left|\mathrm{HCl}_{(\mathrm{IM})}\right| \mathrm{H}_{2(\mathrm{~g})(\mathrm{1atm})}, \mathrm{Pt}$
$\left...

38Electrochemistry

Which of the following is released at cathode during electrolysis of aqueous sodium chloride?

39Electrochemistry

The molar conductivity of 0.01 M acetic acid at $25^{\circ} \mathrm{C}$ is $16.5 \Omega^{-1} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$ and its molar conductivity at zero concentration is $390.7 \Omega^{-1} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$. What ...

40Electrochemistry

Identify the gas produced due to reduction of \(\mathrm{NH}_4^{+}\) ions at cathode during working of dry cell.

41Electrochemistry

Calculate current in ampere required to deposit \(4.8 \mathrm{~g} ~\mathrm{Cu}\) from it's salt solution in 30 minutes. [Molar mass of \(\mathrm{Cu}=63.5 \mathrm{~g} \mathrm{~mol}^{-1}\) ]

42Electrochemistry

Calculate \(\Delta \mathrm{G}^{\circ}\) for the cell:
\(\mathrm{Sn}_{(\mathrm{s})}\left|\mathrm{Sn}_{(\mathrm{1M})}^{2+}\right|\left|\mathrm{Ag}_{(\mathrm{1M})}^{+}\right| \mathrm{Ag}_{(\mathrm{s})}\) at $$25^{\circ} \mathrm{C}\left(\mathr...

43Electrochemistry

A reaction, \(\mathrm{Ni}_{(\mathrm{s})}+\mathrm{Cu}_{(\mathrm{(M)})}^{+} \rightarrow \mathrm{Ni}_{(\mathrm{IM})}^{+}+\mathrm{Cu}_{(\mathrm{s})}\) occurs in a cell. Calculate \(\mathrm{E}_{\text {cell }}^{\circ}\) if $$\mathrm{E}_{\mathrm{C...

44Electrochemistry

What is the conductivity of \(0.05 ~\mathrm{M} ~\mathrm{BaCl}_2\) solution if its molar conductivity is \(220 ~\Omega^{-1} \mathrm{~cm}^2 \mathrm{~mol}^{-1}\) ?

45Electrochemistry

Calculate molar conductivity of \(\mathrm{NH}_4 \mathrm{OH}\) at infinite dilution if molar conductivities of \(\mathrm{Ba}(\mathrm{OH})_2\)
\(\mathrm{BaCl}_2\) and \(\mathrm{NH}_4 \mathrm{Cl}\) at infinite dilution are $$520,280,129 \Ome...

46Electrochemistry

Which from following is NOT true about voltaic cell?

47Electrochemistry

Which from following expressions is used to find the cell potential of \(\mathrm{Cd}_{(\mathrm{s})}\left|\mathrm{Cd}_{(\mathrm{aq})}^{++}\right|\left|\mathrm{Cu}_{(\mathrm{aq})}^{+}\right| \mathrm{Cu}_{(\mathrm{s})}\) cell at $$25^{\circ} \...

48Electrochemistry

Calculate \(\mathrm{E}_{\text {cell }}^0\) for \(\mathrm{Cd}_{(\mathrm{s})}\left|\mathrm{Cd}_{(\mathrm{1M})}^{++}\right|\left|\mathrm{Ag}_{(\mathrm{1M})}^{+}\right| \mathrm{Ag}_{(\mathrm{s})}\).
$$\left[\mathrm{E}_{\mathrm{Cd}}^0=-0.403 \ma...

49Electrochemistry

A conductivity cell containing \(0.001 \mathrm{~M} \mathrm{~AgNO}_3\) solution develops resistance \(6530 \mathrm{ohm}\) at \(25^{\circ} \mathrm{C}\). Calculate the electrical conductivity of solution at same temperature if the cell constan...

50Electrochemistry

Calculate the time required in second to deposit \(6.35 \mathrm{~g}\) copper from its salt solution by passing 5 ampere current.
[Molar mass of \(\mathrm{Cu}=63.5 \mathrm{~g} \mathrm{~mol}^{-1}\) ]