In nickel-cadmium battery charging, water is consumed due to gas formation. Which option correctly states this relationship?

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Multiple Choice

In nickel-cadmium battery charging, water is consumed due to gas formation. Which option correctly states this relationship?

Explanation:
Charging a nickel-cadmium cell drives electrolysis of the electrolyte water, splitting it into hydrogen and oxygen gases. This gas formation uses up water from the liquid electrolyte, so the water content drops over time. That’s why water is consumed during charging. The other ideas—water being produced, staying the same, or not involved—don’t fit because the charging process actually removes water via gas evolution.

Charging a nickel-cadmium cell drives electrolysis of the electrolyte water, splitting it into hydrogen and oxygen gases. This gas formation uses up water from the liquid electrolyte, so the water content drops over time. That’s why water is consumed during charging. The other ideas—water being produced, staying the same, or not involved—don’t fit because the charging process actually removes water via gas evolution.

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