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प्रश्न
Identify the INCORRECT statement about mercury battery.
विकल्प
It is a primary dry cell.
It is used in hearing aids, electric watches, pacemakers, etc.
It has longer life than dry cell.
It consists of zinc anode, amalgamated with mercury.
MCQ
उत्तर
It is a primary dry cell.
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Galvanic Cells Useful in Day-to-day Life
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