Q. Which of the following reactions produces hydrogen?
A) $H_{2}S_{4}O_{8} + H_{2}O$
B) $BaO + HCl$
C) $Mg + H_{2}O$
D) ${Na}_{2}O_{2} + 2HCl$
Explanation
(c)
$Mg + 2H_{2}O \rightarrow Mg(OH)_{2} + H_{2} \uparrow$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.