Which one of the following gas is formed a diluted acid is reacted with an active metal? a) H2 b) O2 c) CO2 d) N2
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Hydrogen gas is evolved dilute hydrochloric acid is added to a reactive metal.
When iron reacts with dilute H2SO4. iron (II) sulphate with the evolution of hydrogen gas is formed.
Fe(s)+H2SO4(aq)→FeSO4(aq)+H2(g)
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