IGCSE O Level Chemistry Online Tests
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Chemical to Electrical Energy MCQs: Questions and Answers PDF Download
Duration of bright-bulb is shorter in a magnesium-copper battery because of the
- difference of copper and magnesium in reactivity series is lesser
- polarization occurs too quickly
- magnesium is highly reactive and dissolves very rapidly in acid
- none of above
Most reactive metal in a given series is
- magnesium
- zinc
- iron
- tin
Least reactive metal in given series is
- magnesium
- zinc
- iron
- tin
Least reactive metal in given series is
- tin
- copper
- lead
- silver
Duration of bright-bulb can be enhanced, if along with copper
- magnesium is used
- the acid is more dilute
- zinc
- graphite
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