Which of the following statements are true for fuel cells?

What acts as a reducing agent when a dry cell is working?

What are the common uses of a dry cell?

Draw the diagram of a galvanic cell and indicate the direction of flow of electrons and current for the cell constructed using $Al|Al^{3+}$ and $Ag^{+}|Ag$ half-cells,given $E^o_{Al^{3+}|Al} = -1.66 \ V$ and $E^o_{Ag^{+}|Ag} = 0.80 \ V$.

What is the correct order of chemical reactivity with water according to the electrochemical series?

Write reactions for the followings :
$1.$ Anode reaction of dry cell.
$2.$ Reduction reaction of dry cell.