How to differentiate between Carbon Zinc and Alkaline batteries?
(A) Though Carbon Zinc and Alkaline cells both display a terminal voltage of nearly 1.5 Volts. The essential difference between the two lies in their capacity for producing sustained currents. In case of Carbon Zinc batteries, as current is taken, the terminal voltage drops. Though this takes place in Alkaline batteries too, but there is a gradual dropping (up to a point).