NEET UG CHEMISTRY MCQ: ELECTRO CHEMISTRY

1 Medium

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Analyzing +4 | -1

Statement (S): A graph plotted between

{\Lambda _v}\,vs.\,{c^{1/2}}

gives a straight line with slope equal to

- A

and intercept equal to

{\Lambda _\infty }

Explanation (E): The value of

A

for a given solvent and temperature depends upon the nature of electrolyte, i.e., charge on cation or anion furnished by electrolyte on dissolution.

View answer and explanation

Correct option: D

Both S and E are correct and E is not correct explanation of S.

Option D (Both S and E are correct and E is not correct explanation of S) is correct because both the statement about the graph and the explanation about A's dependence are true, but the explanation doesn't directly explain the statement.

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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?