NEET UG CHEMISTRY MCQ: ELECTRO CHEMISTRY

1 Easy

1 of 1

Analyzing +4 | -1

Select the correct statements among the following.

(i) Copper sulphate solution can't be stored in a zinc pot.

(ii) The potential of individual half cell can be measured at

298 \mathrm{~K}

and at 1 bar pressure.

(iii) Copper can dissolve in dil.

\mathrm{HCl}

but it cannot dissolve in nitric acid due to passive nature of nitrate ion towards copper.

(iv) Platinum and gold electrodes can be used both as anode and cathode.

View answer and explanation

Correct option: A

Only (i) and (iv)

Option A (Only (i) and (iv)) is correct because copper sulphate cannot be stored in a zinc pot due to a redox reaction, and platinum/gold can be used as both anode and cathode due to their inertness.

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

A{l^{3 + }}

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{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?