Question

Which of the following metals give inflammable gas with both acid and base?

• A. $Mg\text{and}Al$
• B. $Mg\text{and}Be$
• C. $Na\text{and}Zn$
• D. $Zn\text{and}Al$

Answer 1

The correct option is D $Zn\text{and}Al$

Amphoteric metals like $Be,Zn,Al,Sn,Pb$ etc gives $H_2$ gas (inflammable) with both acid and base.