Quiz on Battery and Electrochemical Cells

A battery is an arrangement of electrolytic cells.

• True

• False

Which of the following is not a requirement for a useful battery?

• It should be light and compact

• It should have a reasonable life span

• It should ideally have a constant voltage throughout its lifespan

• It should supply Alternating Current(AC)

Which of the following statements is true regarding a primary cell?

• The electrode reactions can be reversed

• It can be recharged

• An example of a primary cell is a mercury cell

• An example of a primary cell is a nickel-cadmium storage cell

Secondary cells are also called storage cells.

• True

• False

Which of the following is used as an anode in a dry cell?

• Zinc

• Graphite

• Mercury(II) oxide

• Nickel

Why do leak proof dry cells have an iron or steel sheet covering the zinc cylinder?

• It increases the potential difference between the anode and cathode

• It acts as a barrier around the zinc cylinder which can develop holes during use

• It makes it waterproof

• It prevents the leakage of current

Which of the following is the electrolyte used in a dry cell?

• Ammonium chloride

• Manganese dioxide

• Potassium hydroxide

• Sulphuric acid

What is the role of manganese dioxide in a dry cell?

• It acts as an electrolyte

• It acts as the cathode

• It acts as an anode

• It acts as a depolariser

What is the final oxidation state of manganese after the electrochemical reactions in a dry cell?

• +4

• +3

• +2

• +1

Which of the following scientists invented the first dry cell?

• Carl Gassner

• Nikola Tesla

• Antione Lavoisier

• Georges Leclanché