Chemistry
Which metal produces hydrogen gas on reaction with cold water?
- Al
- Fe
- Pd
- Na
Hydrogen
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Answer
Na
Reason — Reactive metals like potassium, sodium and calcium react with cold water forming their corresponding oxides and evolving hydrogen.
2Na + 2H2O ⟶ 2NaOH + H2 ↑
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Related Questions
Complete the following word equations:
(a) Sodium hydroxide + zinc ⟶ hydrogen + ……………
(b) Calcium + water ⟶ calcium hydroxide + ……………
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