Question

Generally, metals react with acids to give
salt and hydrogen gas, Which of the
following acids does not give hydrogen
gas on reacting with metals (except Mn
and Mg)?

A) Sulphuric acid
B) Hydrochloric acid
C) Nitric acid
D) All of these ​

Answer 1

Answer:

option ( C ) is correct .

Explanation:

Nitric acid ( HNO3) is a strong oxidising agent so it do not give hydrogen gas on reacting with metals ( except Mn and Mg ).

Answer 2

Hydrogen gas is not evolved when a metal reacts with nitric acid. It is because HNO3 is a strong oxidising agent. It oxidises the H2 produced to water and itself gets reduced to any of the nitrogen oxides (N2O, NO, NO2).