4. (d) none of these Which gas is produced by the reaction of metals with acid? (b) Oxygen (a) Hydrogen (c) Carbon dioxide (d) Nitrogen
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Answer:
oxygen
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Metals readily react with acid and produce hydrogen gas which burns with a pop sound. Metals are placed above hydrogen in reactivity series and displace it during a reaction with an acid. As acids have a property of giving H
+
ions. A resultant is formed with release of hydrogen gas.
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