The most common dry cell is the Leclanche cell. It consists of a carbon (graphite) rod as cathode which is surrounded by by powdereed `"_______"` and carbon black.

Options

A. `Mn_(3)O_(4)`
B. `MnO`
C. `MnO_(2)`
D. `Mn_(2)O_(5)`

Answer

C

Explanation

Flashlights and radios are examples of devices that are oftern powered by the zinc-carbon, or Leclanche dry cell. This voltaic cell has a `Zn` can as the anode, a graphite rod in the center, surrounded by a paste of maganese dioxide `(MnO_(2))`, ammonium and zinc chlorides, and carbon black, is the cathode.