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  9. Q64

PPSC PCS 2025 · Question 64 of 100

Which one of the following statements is correct regarding lithium and alkaline batteries?

Science & Tech

  1. ALithium and alkaline batteries are both generally rechargeable.
  2. BAlkaline batteries exhibit a gradual decrease in voltage output over time.Correct
  3. CLithium batteries have a lower energy density compared to alkaline batteries.
  4. DLithium batteries do not maintain a consistent voltage output over time.

Answer: B. Alkaline batteries exhibit a gradual decrease in voltage output over time.

Explanation

Alkaline batteries show a gradual voltage decline as they discharge, unlike lithium cells which hold voltage steady.

Source: https://www.nimbusias.com/wp-content/uploads/2025/12/Punjab-PCS-GS-Original-Paper-2025.pdf

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