Of the following,which cannot be obtained by electrolysis of the aqueous solution of their salts?

How will the $pH$ of brine (aq. $NaCl$ solution) be affected when it is electrolysed?

Which of the following statements is correct regarding the electrolysis of molten $NaCl$?

$O_2$ gas will be evolved as a product of electrolysis of $:$
$(A)$ an aqueous solution of $AgNO_3$ using silver electrodes.
$(B)$ an aqueous solution of $AgNO_3$ using platinum electrodes.
$(C)$ a dilute solution of $H_2 SO_4$ using platinum electrodes.
$(D)$ a high concentration solution of $H_2 SO_4$ using platinum electrodes.
Choose the correct answer from the options given below $:$

The product,which is not obtained during the electrolysis of brine solution,is

Give the reaction that occurs near the anode during the electrolysis of sulfuric acid in an electrolytic cell using an inert electrode.