In a lead-acid cell, lead is called as

The correct answer is: B. negative active material

Lead is the negative active material in a lead-acid cell. It is the material that is oxidized during the discharge of the cell. The lead is converted to lead sulfate, which is a white solid.

The other options are incorrect.

• Option A: The positive active material in a lead-acid cell is lead dioxide.
• Option C: Passive material is a material that does not participate in the electrochemical reaction.
• Option D: None of the above is incorrect.

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