MHT CET 2026 20th April Morning Shift | Electrochemistry Question 4 | Chemistry

$\text{PbO}_{2(s)} + 4\text{H}^+_{(aq.)} + \text{SO}_4^{2-}{}_{(aq.)} + 2e^- \rightarrow \text{Pb}_{(s)} + \text{PbSO}_{4(s)} + 2\text{H}_2\text{O}_{(\ell)}$

$\text{PbO}_{2(s)} + 4\text{H}^+\ 2e^- \rightarrow \text{Pb}^{2+} + 2\text{H}_2\text{O}_{(\ell)}$

$\text{Pb}_{(s)} + \text{SO}_4^{2-}{}_{(aq.)} \rightarrow \text{PbSO}_{4(s)} + 2e^-$

$\text{PbSO}_{4(s)} + 2e^- \rightarrow \text{Pb}_{(s)} + \text{SO}_4^{2-}{}_{(aq.)}$

MHT CET 2026 20th April Morning Shift

MCQ (Single Correct Answer)

-0

What is the quantity of electricity required to produce $8$ g of Mg (molar mass = $24\ \text{g mol}^{-1}$) from $\text{MgCl}_2$ solution ?

$0.222$ F

$0.444$ F

$0.666$ F

$0.888$ F

MHT CET 2026 20th April Morning Shift

MCQ (Single Correct Answer)

-0

What is the molar conductivity of $0.02$ M KI solution if its conductivity is $4.37 \times 10^{-4}\,\Omega^{-1}\,\text{cm}^{-1}$ ?

$8.74\ \Omega^{-1}\,\text{cm}^2\text{mol}^{-1}$

$21.85\ \Omega^{-1}\,\text{cm}^2\text{mol}^{-1}$

$43.70\ \Omega^{-1}\,\text{cm}^2\text{mol}^{-1}$

$13.65\ \Omega^{-1}\,\text{cm}^2\text{mol}^{-1}$

MHT CET 2025 5th May Evening Shift

MCQ (Single Correct Answer)

-0

What is percent dissociation of $\mathrm{NH}_4 \mathrm{OH}$ if molar conductance at zero concentration for $\mathrm{NH}_4 \mathrm{Cl}$, NaCl and NaOH are 130, 109 and $213 \mathrm{~S} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$ respectively and molar conductivity of $0.01 \quad \mathrm{M} \quad \mathrm{NH}_4 \mathrm{OH}$ is $9.0 \mathrm{~S} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$ ?

$\frac{100}{40}$

$\frac{100}{35}$

$\frac{100}{32}$

$\frac{100}{26}$

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Some Basic Concepts of Chemistry Atomic Structure States of Matter Thermodynamics Chemical Equilibrium Ionic Equilibrium Liquid Solution Redox Reactions Surface Chemistry Solid State Electrochemistry Chemical Kinetics Nuclear Chemistry

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