Florida Wastewater Practice Test 2026 - Free Wastewater Certification Practice Questions and Study Guide

Question: 1 / 400

Which dangerous gas could be produced when charging a lead-acid type battery?

Ammonia

Ozone

Hydrogen

Charging a lead-acid battery produces hydrogen gas as a byproduct of the electrochemical reactions occurring within the battery. When the battery is charged, the electrolyte undergoes a process where water is split into hydrogen and oxygen gases. This release of hydrogen, especially in a confined space, can be very dangerous, as hydrogen is highly flammable and can create explosive mixtures when combined with air.

It's crucial for individuals working with or around lead-acid batteries to be aware of the potential for hydrogen gas to accumulate, particularly in poorly ventilated areas. Proper safety measures, such as ensuring adequate ventilation and using spark-proof tools, can minimize the risks associated with hydrogen production during the charging process.

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Carbon monoxide

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