During the electrolysis of aqueous $NaCl$ using platinum electrodes,which product is formed at the cathode?

On electrolysis of aqueous solution of $KI$ in presence of platinum electrodes:
$(a)$ Hydrogen gas is released at cathode
$(b)$ Oxygen gas is released at anode
$(c)$ $pOH$ of solution decreases
$(d)$ There is deposition of potassium at cathode
Choose the correct option from following

During the electrolysis of brine,by using inert electrodes,

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

Which of the following pairs undergoes easier oxidation at the anode?

Molten $CuCl_2$ is electrolysed using platinum electrodes. The reaction occurring at the anode is: