JEE Main Electrochemistry Practice Questions With Solutions

Match List I with List II

Choose the correct answer from the options given below :

Which out of the following is a correct equation to show change in molar conductivity with respect to concentration for a weak electrolyte, if the symbols carry their usual meaning :

The molar conductivity for electrolytes $A$A and $B$B are plotted against $C^{3/2}$C^{3 / 2} as shown below. Electrolytes $A$A and $B$B respectively are:

The emf of cell $\mathrm{Tl}\left|\underset{(0.001\mathrm{M})}{{\mathrm{Tl}}^{+}}\right|\underset{(0.01\mathrm{M})}{{\mathrm{Cu}}^{2+}}\mid \mathrm{Cu}$Tl \left|\right. \underset{\left(\right. 0.001 M \left.\right)}{Tl^{+}} \left|\right. \underset{\left(\right. 0.01 M \left.\right)}{Cu^{2 +}} \mid Cu is $0.83\mathrm{V}$0.83 \textrm{ } V at $298\mathrm{K}$298 \textrm{ } K. It could be increased by :

The reaction;

$\frac{1}{2}{\mathrm{H}}_{2(\mathrm{g})}+{\mathrm{AgCl}}_{(\mathrm{s})}\to {\mathrm{H}}_{(\mathrm{aq})}^{+}+{\mathrm{Cl}}_{(\mathrm{aq})}^{-}+{\mathrm{Ag}}_{(\mathrm{s})}$\frac{1}{2} H_{2 \left(\right. \textrm{ } g \left.\right)} + AgCl_{\left(\right. s \left.\right)} \rightarrow H_{\left(\right. aq \left.\right)}^{+} + Cl_{\left(\right. aq \left.\right)}^{-} + Ag_{\left(\right. s \left.\right)}

occurs in which of the following galvanic cell :

Given below are two statements :

Statement (I) : Fusion of ${\mathrm{MnO}}_2$MnO_{2} with $\mathrm{KOH}$KOH and an oxidising agent gives dark green ${\mathrm{K}}_2{\mathrm{MnO}}_4$K_{2} MnO_{4}.

Statement (II) : Manganate ion on electrolytic oxidation in alkaline medium gives permanganate ion.

In the light of the above statements, choose the correct answer from the options given below :

How can an electrochemical cell be converted into an electrolytic cell ?

A conductivity cell with two electrodes (dark side) are half filled with infinitely dilute aqueous solution of a weak electrolyte. If volume is doubled by adding more water at constant temperature, the molar conductivity of the cell will -

The quantity of silver deposited when one coulomb charge is passed through ${\mathrm{AgNO}}_3$AgNO_{3} solution :

For the electro chemical cell

$\mathrm{M}\left|{\mathrm{M}}^{2+}\right||\mathrm{X}|{\mathrm{X}}^{2-}$M \left|\right. M^{2 +} \left|\right. \left|\right. X \left|\right. X^{2 -}

If ${\mathrm{E}}_{\left({\mathrm{M}}^{2+}/\mathrm{M}\right)}^0=0.46\mathrm{V}$E_{\left(\right. M^{2 +} / M \left.\right)}^{0} = 0.46 \textrm{ } V and ${\mathrm{E}}_{\left(\mathrm{x}/{\mathrm{x}}^{2-}\right)}^0=0.34\mathrm{V}$E_{\left(\right. x / x^{2 -} \left.\right)}^{0} = 0.34 \textrm{ } V.

Which of the following is correct?