UP Board Class 12 Redox & Electrochemistry — practice questions
30 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice UP Board Class 12 Redox & Electrochemistry in the app →A student says, "Since the Zn rod becomes negatively charged, it cannot be the site of oxidation." Which optioBased on the figure, which label is most consistent with the process occurring at the Zn rod?
 \,||\, \mathrm{Cu}^{2+}(aq) | \mathrm{Cu}$, the standarThe role of a salt bridge in a galvanic cell is to:The standard reduction potential of the standard hydrogen electrode (SHE) is assigned the value:For a cell reaction with standard cell potential $E^\circ_\text{cell} = +1.10\,\text{V}$ and $n = 2$ electronsThe Nernst equation for a cell reaction at $298\,\text{K}$ with $n$ electrons exchanged is:For a cell reaction with $E^\circ_\text{cell} = +0.59\,\text{V}$ and $n = 2$, the equilibrium constant $K$ at Molar conductivity $\Lambda_m$ of an electrolytic solution is related to its conductivity $\kappa$ and molar cOn dilution, the molar conductivity of a strong electrolyte solution:Kohlrausch's law of independent migration of ions states that:A current of $0.5\,\text{A}$ is passed through an aqueous $\mathrm{CuSO_4}$ solution for $32\,\text{minutes}\,Which of the following is classified as a secondary (rechargeable) cell?The degree of dissociation $\alpha$ of a weak electrolyte at a given concentration is related to its molar conIn a Daniell cell with Zn (anode) and Cu (cathode), and $E^\circ(Cu^{2+}/Cu) = +0.34$ V, $E^\circ(Zn^{2+}/Zn) The Nernst equation at $25^\circ$C for a cell with $n$ electrons transferred is $E = E^\circ -$:Electrolysis of molten NaCl at the electrode passes $1$ F of charge. The amount of Na deposited at the cathodeIron rusting on the village ploughshare is best described as: