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NEET UG CHEMISTRY MCQ: ELECTRO CHEMISTRY

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Which of the following chemical reactions represents Hall-Heroult Process?
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Correct option: B
2Al2O3+3C→4Al+3CO22A{l_2}{O_3} + 3C \to 4Al + 3C{O_2}
Option B (2Al2O3+3C→4Al+3CO22Al_2O_3 + 3C \to 4Al + 3CO_2) is the correct representation of the Hall-Heroult process, which is used for aluminum extraction.

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4.5 g of Al (at. mass 27 amu) is deposited at cathode from Al3+A{l^{3 + }} solution by a certain quantity of charge. The volume of H2{H_2} produced at STP from H+{H^ + } ions in solution by the same quantity of charge will be : The correct order of molar conductivity at infinite dilution of LiCl,NaClandKCl\mathrm{LiCl},{\rm{NaCl {\kern 1pt}{\kern 1pt}and {\kern 1pt}{\kern 1pt}KCl}} is A solution of copper sulphate (CuSO4)\left(\mathrm{CuSO}_4\right) is electrolysed for 10 minutes with a current of 1.5 amperes. The mass of copper deposited at the cathode (at. mass of Cu = 63 u) is The desired amount of charge for obtaining one mole of Al from Al3+\mathrm{A}{\mathrm{l}^{3 + }} is When an aqueous solution of lithium chloride is electrolysed using graphite electrodes : Which are used as secondary reference electrodes?
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