Question

Generally metals react with acid to give salt and hydrogen gas. Which of the following acid does not give hydrogen gas on reacting with metals (except Mn and Mg)? -
1-SULPHURIC ACID
2-HYDROCLORIC ACID
3-NITRIC ACID
4-ALL OF THESE

Answer 1

All of these did not give hydrogen gas when react.

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).

Answer:

Ans..[3]✓✓