NEET UG CHEMISTRY MCQ: ELECTRO CHEMISTRY

1 Medium

1 of 1

Application +4 | -1

Assume that during electrolysis of

AgN{O_3}

, only

{H_2}O

is electrolysed and

{O_2}

is formed as:

2{H_2}O \to 4{H^ + } + {O_2} + 4{e^ - }

{O_2}

formed at NTP due to passage of 2A of current for 965 s is

View answer and explanation

Correct option: A

0.112 L

Option A is correct. The volume of oxygen formed is calculated using Faraday's laws, considering the current, time, and the stoichiometry of the electrolysis reaction of water.

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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}

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{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?