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Which of the following pairs of substances on reaction will evolve H₂ gas?

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An Intiative by Sri Chaitanya

Iron and dilute H₂SO₄

Copper and dilute HCl

Sodium and ethyl alcohol

Iron and steam

answer is A, C, D.

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Detailed Solution

Copper has highest reduction potential than H₂ so it does not release Hydrogen from HCl.

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