23
MCQ (Multiple Correct Answer)
What will happen during the electrolysis of aqueous solution of $\mathrm{CuSO}_4$ by using platinum electrodes?
A
Copper will deposit at cathode
B
Copper will deposit at anode
C
Oxygen will be released at anode
D
Copper will dissolve at anode
24
MCQ (Multiple Correct Answer)
What will happen during the electrolysis of aqueous solution of $\mathrm{CuSO}_4$ in the presence of Cu electrodes?
A
Copper will deposit at cathode
B
Copper will dissolve at anode
C
Oxygen will be released at anode
D
Copper will deposit at anode
25
MCQ (Multiple Correct Answer)
Conductivity $\kappa$, is equal to ............. .
A
$\frac{1}{R} \frac{l}{A}$
B
$\frac{G^*}{R}$
C
$\Lambda_m$
D
$\frac{l}{A}$
26
MCQ (Multiple Correct Answer)
Molar conductivity of ionic solution depends on ........... .
A
temperature
B
distance between electrodes
C
concentration of electrolytes in solution
D
surface area of electrodes
27
MCQ (Multiple Correct Answer)
For the given cell, $\mathrm{Mg}\left|\mathrm{Mg}^{2+} \| \mathrm{Cu}^{2+}\right| \mathrm{Cu}$
A
Mg is cathode
B
Cu is cathode
C
The cell reaction is $\mathrm{Mg}+\mathrm{Cu}^{2+} \longrightarrow \mathrm{Mg}^{2+}+\mathrm{Cu}$
D
Cu is the oxidising agent