During discharge, the active material of both the positive and negative plates is changed to___________?

A. positive active material
B. negative active material
C. passive material
D. none of the above

A. goggles or other face shield
B. rubber
C. rubber boots and gloves
D. all above safety devices

A. ions
B. holes
C. electrons
D. none of the above

A. no
B. very little
C. less
D. more

A. colour
B. mass
C. viscosity
D. specific gravity

A. boiling of electrolyte due to gassing
B. warg of plates
C. damage to separators, cell caps covers and battery case due to excessive temperature
D. all above