An alkaline battery is a non-rechargeable dry cell that utilizes zinc and manganese dioxide as reactants, with a zinc rod serving as the anode and manganese dioxide functioning as the cathode. The electrolyte in this battery is potassium hydroxide, making it basic (alkaline). The battery is enclosed in a steel container, and the slightly porous zinc anode provides a larger effective area, allowing the cell to deliver more current and have a longer life compared to common dry cells
What materials are used as reactants in an alkaline battery?
An alkaline battery uses zinc and manganese dioxide as reactants
What is the role of the zinc rod in an alkaline battery?
The zinc rod serves as the anode in an alkaline battery
What function does manganese dioxide serve in an alkaline battery?
Manganese dioxide functions as the cathode in an alkaline battery
What type of electrolyte is used in alkaline batteries?
The electrolyte in alkaline batteries contains potassium hydroxide, making it basic (alkaline)
How is the alkaline battery constructed?
The alkaline battery is enclosed in a steel container
What is the primary reactant used as the anode in an alkaline battery?
a) Manganese dioxide
b) Zinc
c) Lead
d) Silver
Answer: b) Zinc
Which substance serves as the cathode in an alkaline battery?
a) Zinc
b) Manganese dioxide
c) Potassium hydroxide
d) Silver oxide
Answer: b) Manganese dioxide
What type of electrolyte is found in alkaline batteries?
a) Sulfuric acid
b) Potassium hydroxide
c) Sodium chloride
d) Hydrochloric acid
Answer: b) Potassium hydroxide
What is the main advantage of the porous design of the zinc anode in alkaline batteries?
a) It reduces weight
b) It allows for faster charging
c) It increases the effective area for current delivery
d) It prevents leakage
Answer: c) It increases the effective area for current delivery
What is the classification of alkaline batteries?
a) Secondary cells
b) Rechargeable batteries
c) Primary cells
d) Hybrid cells
Answer: c) Primary cells