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प्रश्न
Why are the following metals not used in the lab. preparation of hydrogen?
aluminium
उत्तर
Aluminium forms a protective coating of Al2O3 due to its great affinity for oxygen. So, it does not give hydrogen with acid after the reaction has occurred for some time.
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संबंधित प्रश्न
Which metal is preferred for the preparation of hydrogen?
from water?
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Why are the following metals not used in the lab. preparation of hydrogen?
sodium
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