Reactivity of metals with dilute acids: Which metal among the following does not liberate hydrogen gas on treatment with dilute HCl? Use the metal activity series relative to hydrogen. Choose the correct option.

Difficulty: Easy

Correct Answer: Ag

Explanation:

Given data

Dilute HCl reacts with metals above hydrogen in the reactivity series to release H₂.

Concept/Approach
Zinc, iron, and calcium are above hydrogen and liberate H₂. Silver is below hydrogen and does not react with dilute HCl to produce hydrogen gas.

Final Answer
Ag

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