Q. Which metal gives hydrogen gas on heating with hot concentrated alkali?
A) Ag
B) Ni
C) Zn
D) Cu
Explanation
(c)
$Zn + 2NaOH \longrightarrow \ {Na}_{2}{ZnO}_{2} + H_{2}$
$\therefore\$Zn liberates hydrogen with hot conc. alkali.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.