Electrochemistr...

Assertion: The anions migrate to the cathode in an electrolytic cell.
Reason: Positively charged ions are attracted to the negatively charged cathode.

At anode of an electrochemical cell, which of the following change may occur?

In electrochemical corrosion. the metal undergoing corrosion : 

Zn(s)|ZnCl$$_2$$(aq)|Cl$$^-$$(aq)|Cl$$_2$$(g)|C(s)
According to the above cell diagram the electrochemical cell described, the reaction at anode is :

Assertion: Input of energy is required by electrolytic cells.

$$Zn\left( s \right) \left| Zn{ Cl }_{ 2 }\left( aq \right)  \right| \left| { Cl }^{ - }\left( aq \right)  \right| \left| { Cl }_{ 2 }\left( g \right)  \right| C\left( s \right) $$
The reaction at anode in the electrochemical cell is:

What is a cathode?

What is the correct formula for determining the voltage of an electrochemical cell?

What two metals are often used in electrochemical cells?

Which of the following will not occur in a voltaic cell while a chemical reaction is on a spontaneous process?