f.4 chem question why zinc-carbon cells should be removed when not in use for prolonged periods?

Zinc-carbon cells should be removed from the electrical appliances when not in use for prolonged periods.
Electrolyte in zinc-carbon cells is acidic in nature, which slowly corrodes the zinc cup (anode). This could eventually cause leakage of the electrolyte, corroding the metallic parts of the appliance as well.