Question

i) Does any metal start floating in water after some time? If yes, name the metals and give
the reason?
ii) Hydrogen gas is not evolved when a metal reacts with nitric acid. Give reason.​

Answer 1

Answer:

2.nitric acid is a very good oxidizing agent ,if any metal reacts with nitric acid it converted the hydrogen to water by adding oxygen and the nitrogen himself converted to NO2,NO etc.. hence hydrogen gas is not evolved when a metal reacts with nitric acid

Answer 2

1).No, metal start floating in water after some time..

2). Hydrogen gas is not evolved when metals react with nitric acid because nitric acid is a good oxidizing agent thus when nitric acid reacts with any metal it converts the hydrogen gas (which is produced during the reaction)into water..