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Class 10ScienceChemical Substances – Nature and BehaviourAcids, Bases, and SaltsMedium
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In the general reaction of an acid and a metal, what forms along with salt?

Answer and explanation

Correct answer: Hydrogen gas

The governing rule is that a sufficiently reactive metal displaces hydrogen from an acid. In general form, metal + acid → salt + hydrogen gas. For example, Mg + 2HCl → MgCl₂ + H₂. Therefore option A is correct. Oxygen is not the usual product of this reaction, water is associated with acid–base neutralisation, and carbon dioxide is produced when an acid reacts with a carbonate or hydrogen carbonate.

Related tags

ScienceClass10Acid-Metal-ReactionChemical-ProductsAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And Behaviour
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  1. 1What type of substance turns blue litmus paper red?
  2. 2What type of substance turns red litmus paper blue?
  3. 3Which of the following substances acts as a natural indicator?
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  6. 6What is the nature of a solution whose pH is less than 7?
  7. 7At 25°C, a solution with a pH greater than 7 is of which nature?
  8. 8A student dips red litmus paper into a soap solution. What change will occur in the red litmus paper?
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