Reaction between following pairs will produce hydrogen exce…

Chemistry Hydrogen and Its Compounds ( Not in Syllabus ) Hydrogen Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 12, 2026

Reaction between following pairs will produce hydrogen except :

Cu + HCl

Fe + H 2 O (g)

Mg + H 2 O (hot)

Na + Alcohol

Text Solution

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The correct answer is:

Cu + HCl ⎯→ No reaction

3Fe + 4H 2 O (g) ⎯→ Fe 3 O 4 + 4H 2

Mg + 2H 2 O (hot) ⎯→ Mg(OH) 2 + H 2

Na + C 2 H 5 OH ⎯→ C 2 H 5 ONa + H

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