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These are examples of primary cells EXCEPT I. Lead-acid battery ii. Leclanche (dry) cell iii. Lithium ion battery iv. Mercury button battery v. Nickel cadmium battery
Accepted Answer
The answer is I. Lead-acid battery.
Here's why:
Primary Cells are non-rechargeable batteries. They undergo a chemical reaction that produces electricity, but once the reactants are consumed, the battery is effectively dead.
Secondary Cells are rechargeable batteries. They utilize reversible chemical reactions that can be reversed by applying an external electrical current.
Lead-acid batteries are secondary cells because they can be recharged by applying an external current, reversing the chemical reaction that occurred during discharge.
The other options (Leclanche, Lithium-ion, Mercury button, and Nickel-Cadmium) are all primary cells.
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