Hydrogen gas will not be released during the reaction of

Iron with dilute hydrochloric acid

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Aluminium with dilute sulphuric acid

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Zinc with nitric acid

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Sodium with water

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Solution

The correct option is C
Zinc with nitric acid
Hydrogen gas is not evolved when a metal reacts with nitric acid because the acid is a strong oxidising agent and oxidises the hydrogen produced to water and itself gets reduced to any of the nitrogen oxides $(N_{2} O, N O, N O_{2})$ . Only magnesium and manganese react with very dilute nitric acid to evolve hydrogen gas.

Hence, the correct answer is option (c).

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