NEET UG CHEMISTRY MCQ: ELECTRO CHEMISTRY

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The products formed when an aqueous solution of

{NaBr}

is electrolysed in a cell having inert electrodes are:

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Correct option: C

{H}_2, {Br}_2

and

{NaOH}

Option C (

{H}_2, {Br}_2

and

{NaOH}

) is correct because during the electrolysis of aqueous NaBr, water is reduced at the cathode to produce hydrogen gas and hydroxide ions, while bromide ions are oxidized at the anode to produce bromine gas.

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4.5 g of Al (at. mass 27 amu) is deposited at cathode from

A{l^{3 + }}

solution by a certain quantity of charge. The volume of

{H_2}

produced at STP from

{H^ + }

ions in solution by the same quantity of charge will be : The correct order of molar conductivity at infinite dilution of

\mathrm{LiCl},{\rm{NaCl {\kern 1pt}{\kern 1pt}and {\kern 1pt}{\kern 1pt}KCl}}

is A solution of copper sulphate

\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

\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?