Question

Generally, when meals are treated with mineral
da, hydrogen gas is berated but when metals
except Me and My are treated with HNO,
hydrogen is not liberated, why?​

Answer 1

Answer:

Generally, when metals are treated with mineral acids, hydrogen gas is liberated but when metals (except Mn and Mg) are treated with HNO3, hydrogen is not liberated, why? Nitric acid (HNO3) is a strong oxidising agent. ... So, in the reaction of metals (except Mn and Mg) with dilute nitric acid, no hydrogen gas is evolved.