Alkaline batteries are Primary batteries using manganese dioxide as the positive active material, zinc as the negative active material, and an aqueous solution of potassium hydroxide as the electrolyte. Compatible with manganese dry batteries, and usable in a wide range of applications.
Zinc carbon batteries are Primary batteries using manganese dioxide as the positive active material, zinc as the negative active material, and an aqueous solution of Zinc chloride as the electrolyte. -- Application-- Clock, Remote control etc.