Which of the following liberate hydrogen on reaction with dilute `H_2 SO_4` ?

Which of the following metal liberates hydrogen when treated with dilute H_2SO_4 ?

Which of the following ions does not liberate hydrogen gas on reaction with dilute acids ?

Which of the following ions does not liberate hydrogen gas on reaction with dilute acids ?

Two metals A and B have reduction potential values of -0.25 v and +0.80 V respectiely. Which of these will liberate hydrogen gas from dilute H_(2)SO_(4) ?

The following statements are true under certain conditions. Mention condition in each case. (i) Hydrogen reacts with nitrogen to form ammonia. (ii) Hydrogen can be prepared from water at ordinary temperature. (iii) A metal will liberate hydrogen by its reaction with dilute H_(2)SO_(4)

In which of the following reactions hydrogen is not liberated?

Which of the following metals cannot liberate hydrogen from dilute hydrochloric acid