AIIMS 2018 Chemistry Lead Storage Battery MCQ Question
Assertion : Reverse current flows in charging of lead storage battery:
Reason : During charging 4 PbO PbSO convert into Pb and 2
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
Correct Answer
Detailed Explanation
During the charging of a lead storage battery, the reverse current facilitates the conversion of lead sulfate (PbSO₄) back into lead (Pb) and lead dioxide (PbO₂), effectively restoring the battery's energy storage capacity. This electrochemical reaction occurs at the electrodes, where lead sulfate is reduced at the negative electrode and oxidized at the positive electrode. Other options are not applicable as they do not pertain to the chemical processes involved in the charging of a lead storage battery. Understanding this transformation is crucial for grasping how rechargeable batteries function and maintain their efficiency.
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