What are the two battery types named in the material?

• A. Lead-acid and nickel-cadmium batteries
• B. Wet cell and dry cell batteries
• C. Alkaline and lithium-ion batteries
• D. Primary and secondary batteries

Answer: (B)

Two battery types named in the material are wet cell and dry cell. This distinction comes from how the electrolyte is contained inside the battery. A wet cell uses a liquid electrolyte, while a dry cell has the electrolyte immobilized in a paste or gel. The material uses this construction-based classification to describe batteries, rather than focusing on the specific chemistry or whether the battery can be recharged. That’s why describing them as wet cell and dry cell is the best fit. The other options point to particular chemistries or rechargeability, which aren’t the categories being named in the material.