Electrochemistry

JEE Advanced · Chemistry · 30 past questions

1. Q1 2025 Paper 1

   In an electrochemical cell, dichromate ions in aqueous acidic medium are reduced to Cr$^{3+}$. The current…

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2. Q2 2025 Paper 2

   An electrochemical cell is fueled by the combustion of butane at 1 bar and 298 K. Its cell potential is…

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3. Q3 2024 Paper 1

   In a conductometric titration, small volume of titrant of higher concentration is added stepwise to a larger… (with a figure)

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4. Q4 2024 Paper 2

   An aqueous solution of hydrazine (N$_2$H$_4$) is electrochemically oxidized by O$_2$, thereby releasing…

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5. Q5 2023 Paper 1

   Plotting $1/\Lambda_m$ against $c\Lambda_m$ for aqueous solutions of a monobasic weak acid (HX) resulted in a…

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6. Q6 2022 Paper 1

   The reduction potential ($E^0$, in V) of MnO$_4^-$(aq)/Mn(s) is ______.…

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7. Q7 2022 Paper 2

   Consider the strong electrolytes Z$_m$X$_n$, U$_m$Y$_p$ and V$_m$X$_n$. Limiting molar conductivity… (with a figure)

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8. Q8 2022 Paper 2

   The number of $-CH_2-$ (methylene) groups in the product formed from the following reaction sequence is… (with a figure)

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9. Q9 2021 Paper 2

   Some standard electrode potentials at 298 K are given below…

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10. Q10 2021 Paper 2

    Question Stem for Question Nos. 7 and 8…

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11. Q11 2021 Paper 2

    Question Stem for Question Nos. 7 and 8…

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12. Q12 2018 Paper 1

    For the electrochemical cell…

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13. Q13 2017 Paper 1

    The conductance of a 0.0015 M aqueous solution of a weak monobasic acid was determined by using a…

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14. Q14 2017 Paper 2

    For the following cell…

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15. Q15 2016 Paper 2

    For the following electrochemical cell at 298 K…

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16. Q16 2015 Paper 1

    All the energy released from the reaction X $\rightarrow$ Y, $\Delta_r G^0 = -193$ kJ mol$^{-1}$ is used for…

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17. Q17 2015 Paper 2

    The molar conductivity of a solution of a weak acid HX (0.01 M) is 10 times smaller than the molar…

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18. Q18 2014 Paper 1

    In a galvanic cell, the salt bridge

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19. Q19 2013 Paper 2

    The standard reduction potential data at 25 °C is given below.…

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20. Q20 2013 Paper 2

    An aqueous solution of X is added slowly to an aqueous solution of Y as shown in List I. The variation in…

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21. Q21 2012 Paper 2

    Paragraph for Questions 31 and 32…

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22. Q22 2012 Paper 2

    Paragraph for Questions 31 and 32…

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23. Q23 2011 Paper 2

    Consider the following cell reaction…

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24. Q24 2010 Paper 1

    Paragraph for Questions 17 to 18…

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25. Q25 2010 Paper 1

    Paragraph for Questions 17 to 18…

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26. Q26 2009 Paper 2

    For the reduction of NO$_3^-$ ion in an aqueous solution, E$^0$ is +0.96 V. Values of E$^0$ for some metal…

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27. Q27 2008 Paper 2

    Electrolysis of dilute aqueous NaCl solution was carried out by passing 10 milli ampere current. The time…

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28. Q28 2007 Paper 1

    Chemical reactions involve interaction of atoms and molecules. A large number of atoms/molecules…

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29. Q29 2007 Paper 1

    Chemical reactions involve interaction of atoms and molecules. A large number of atoms/molecules…

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30. Q30 2007 Paper 1

    Chemical reactions involve interaction of atoms and molecules. A large number of atoms/molecules…

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