Chemistry
Which of the following metals does not react with water or acid to produce hydrogen gas?
- Magnesium
- Iron
- Copper
- Zinc
Hydrogen
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Answer
Copper
Reason — Copper (Cu) is less reactive and lies below hydrogen in the reactivity series, so it cannot displace hydrogen from dilute acids and therefore does not produce hydrogen gas. Also, copper does not react with water (cold or hot) to give hydrogen.
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