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प्रश्न
Which gas is produced when dilute hydrochloric acid is added to a reactive metal?
एका वाक्यात उत्तर
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उत्तर
Hydrogen gas is evolved when dilute hydrochloric acid is added to a reactive metal.
\[\ce{\underset{Zinc}{Zn_{(s)}} + \underset{acid}{\underset{Hydrochloric}{2HCl(dil.)}}-> \underset{Zinc chloride}{ZnCl2_{(aq)}} + \underset{Hydrogen}{H2_{(g)}}}\]
Iron and dilute H2SO4 react as follows:
\[\ce{Fe_{(s)} + H2SO4(dil.) -> FeSO4_{(aq)} + H2_{(g)}}\]
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