JEE Mains · Chemistry · STD 11 - 7. Redox reactions
On charging the lead storage battery, the oxidation state of lead changes from \(x_1\) to \(y_1\) at the anode and from \(x_2\) to \(y_2\) at the cathode. The values of \(x_1, y_1, x_2, y_2\) are respectively :
- A \(+4,+2,0,+2\)
- B \(+2,0,+2,+4\)
- C \(0,+2,+4,+2\)
- D \(+2,0,0,+4\)
Answer & Solution
Correct Answer
(B) \(+2,0,+2,+4\)
Step-by-step Solution
Detailed explanation
For charging of lead storage battery cell reaction is \(2 \mathrm{PbSO}_4(\mathrm{~s})+2 \mathrm{H}_2 \mathrm{O}(\mathrm{l}) \rightarrow \mathrm{Pb}(\mathrm{s})+\mathrm{PbO}_2(\mathrm{~s})+2 \mathrm{H}_2 \mathrm{SO}_4(\mathrm{aq})\) At anode \(\mathrm{PbSO}_4\) reduced back to…
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Chemistry
- Which of the following electrolyte can be used to obtain \(\mathrm{H}_2 \mathrm{~S}_2 \mathrm{O}_8\) by the process of electrolysis?JEE Mains 2025 Hard
- The average molar mass of chlorine is \(35.5\, g\) \(mol ^{-1}\). The ratio of \(35\, Cl\) to \(37 \,Cl\) in naturally occurring chlorine is close to :JEE Mains 2020 Hard
- Consider the following sequence of reactions:
11.25 mg of chlorobenzene will produce __________ \(\times 10^{-1} \mathrm{mg}\) of product B .
(Consider the reactions result in complete conversion.)
[Given molar mass of \(\mathrm{C}, \mathrm{H}, \mathrm{O}, \mathrm{N}\) and Cl as \(12,1,16,14\) and \(35.5 \mathrm{~g} \mathrm{~mol}^{-1}\) respectively]JEE Mains 2025 Medium - Identify \(B\) formed in the reaction. \(\begin{array}{l} Cl -\left( CH _2\right)_4- Cl \xrightarrow{\text { excess } NH _3} A \xrightarrow{ NaOH } \\ B + H _2 O + NaCl\end{array}\)JEE Mains 2024 Hard
- Given below are two statements: Statement \(I:\) Hyperconjugation is a permanent effect. Statement \(II:\) Hyper conjugation in ethyl cation \(\left(\mathrm{CH}_{3}-\mathrm{C^+H}_{2}\right)\) involves the over lapping of \(\mathrm{C}_{\mathrm{sp}^{2}}-\mathrm{H}_{1 \mathrm{~s}}\) bond with empty \(2 p\) orbital of other carbon. Choose the correct option:JEE Mains 2021 Hard
- The solubility of \(AgCl\) will be maximum in which of the following?JEE Mains 2022 Medium
More PYQs from JEE Mains
- A sphere of radius \('a'\) and mass \('m'\) rolls along a horizontal plane with constant speed \(v_{0}\). It encounters an inclined plane at angle \(\theta\) and climbs upward. Assuming that it rolls without slipping, how far up the sphere will travel?
JEE Mains 2021 Hard - A black coloured solid sphere of radius \(R\) and mass \(M\) is inside a cavity with vacuum inside. The walls of the cavity are maintained at temperature \(T_0\). The initial temperature of the sphere is \(3T_0\). If the specific heat of the material of the sphere varies as \(\alpha T^3\) per unit mass with the temperature \(T\) of the sphere, where \(\alpha \) is a constant, then the time taken for the sphere to cool down to temperature \(2T_0\) will be ( \(\sigma \) is Stefan Boltzmann constant)JEE Mains 2014 Hard
- For conversion of compound \(A \rightarrow B\), the rate constant of the reaction was found to be \(4.6 \times 10^{-5}\,L\, mol ^{-1}\, s ^{-1}\). The order of the reaction is \(..........\)JEE Mains 2023 Medium
- A student measured the length of a rod and wrote it as \(3.50\;cm\). Which instrument did he use to measure it?JEE Mains 2014 Medium
- The number of \(sp^2\) hybrid orbitals in a molecule of benzene isJEE Mains 2020 Hard
- The reaction \(A(g) \rightleftharpoons B(g) + C(g)\) was initiated with the amount '\(a\)' of \(A(g)\). At equilibrium it is found that the amount of \(A(g)\) remaining is \((a - x)\) at a total pressure of \(p\).
The equilibrium constant \(K_p\) of the reaction can be calculated from the expression :JEE Mains 2026 Medium