Multiple choice

Which of the following batteries does not contain an electrolyte ?

  1. A flow battery

  2. A frog battery

  3. A water-activated battery

  4. Zinc-air batteries
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A water-activated battery is a disposable reserve battery that does not contain an electrolyte and hence produces no voltage until it is soaked in water for several minutes.

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