Which of the following metal evolves hydrogen on reacting with cold dilute $H N O_{3}$ ?

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Solution

The correct option is B Mg
Only magnesium and manganese react with nitric acid to release hydrogen gas. So, option A is correct.

Hydrogen gas is not evolved when other metals react with nitric acid because it is a strong oxidising agent. It oxidises hydrogen produced to water and itself gets reduced to a nitrogen oxide.

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Similar questions

Which of the following metals evolves hydrogen on reacting with cold dilute $H N O_{3}$ ?

Name a metal which reacts with very dilute HNO₃ to evolve hydrogen

N H_{4} N O_{3}

H N O_{3}

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