Question

A metal which gives hydrogen gas on reacting with both dilute acid and alkali.

Answer 1

ALUMINIUM and ZINC metal gives hydrogen gas on reacting with both dilute acid and alkali.....
Hope it helps u☆☆☆

Answer 2

Heyyaaa mate,

● Answer -
Zinc

● Explaination -
- Because of its moderate reactivity, zinc is an amphoteric metal. i.e. it reacts with both acids and alkalies.

- Zinc reacts with hydrochloric acid to give zinc chloride liberating H2 gas.
Zn + 2HCl ---> ZnCl2 + H2

- Zinc reacts with sodium hydroxide to give sodium zincate along with release of H2.
Zn + 2NaOH ---> Na2ZnO2 + H2

Hope this helps you...